County Maps US

US counties starting with S

270 counties and county-equivalents, which is 9% of the 3,144 in the United States. They are spread across 47 states. Sort any column, or select a county for its map and full data.

Every county beginning with S

US counties and county-equivalents starting with S
NameStatePopulationLand areaDensityMedian incomeSeatFIPS
Sabine ParishLouisiana21,834866.6 sq mi25.2 per sq mi$50,329Many22085
Sabine CountyTexas10,012491.7 sq mi20.4 per sq mi$66,585Hemphill48403
Sac CountyIowa9,525575 sq mi16.6 per sq mi$73,838Sac City19161
Sacramento CountyCalifornia1,618,460965.4 sq mi1,677 per sq mi$92,175Sacramento06067
Sagadahoc CountyMaine37,979254 sq mi150 per sq mi$87,806Bath23023
Saginaw CountyMichigan187,688800.8 sq mi234 per sq mi$60,622Saginaw26145
Saguache CountyColorado6,7323,169 sq mi2.1 per sq mi$50,082Saguache08109
Salem CountyNew Jersey66,280331.9 sq mi200 per sq mi$79,960Salem34033
Salem cityVirginia25,81614.5 sq mi1,778 per sq mi$66,725Salem city51775
Saline CountyArkansas133,288723.5 sq mi184 per sq mi$79,046Benton05125
Saline CountyIllinois22,772380 sq mi59.9 per sq mi$53,117Harrisburg17165
Saline CountyKansas53,377720.2 sq mi74.1 per sq mi$65,422Salina20169
Saline CountyMissouri23,265755.5 sq mi30.8 per sq mi$57,931Marshall29195
Saline CountyNebraska14,996574.1 sq mi26.1 per sq mi$79,910Wilber31151
Salt Lake CountyUtah1,220,916752.9 sq mi1,622 per sq mi$97,494Salt Lake City49035
Saluda CountySouth Carolina19,680453.2 sq mi43.4 per sq mi$51,009Saluda45081
Sampson CountyNorth Carolina61,504945.9 sq mi65.0 per sq mi$52,432Clinton37163
San Augustine CountyTexas7,722530.7 sq mi14.6 per sq mi$50,408San Augustine48405
San Benito CountyCalifornia70,0821,389 sq mi50.5 per sq mi$114,394Hollister06069
San Bernardino CountyCalifornia2,224,09120,068 sq mi111 per sq mi$85,478San Bernardino06071
San Diego CountyCalifornia3,282,2484,211 sq mi779 per sq mi$106,268San Diego06073
San Francisco CountyCalifornia826,07946.7 sq mi17,695 per sq mi$140,970San Francisco06075
San Jacinto CountyTexas29,488569.2 sq mi51.8 per sq mi$65,364Coldspring48407
San Joaquin CountyCalifornia823,8151,392 sq mi592 per sq mi$92,179Stockton06077
San Juan CountyColorado813387.5 sq mi2.1 per sq mi$77,824Silverton08111
San Juan CountyNew Mexico120,3405,517 sq mi21.8 per sq mi$55,872Aztec35045
San Juan CountyUtah14,5427,824 sq mi1.9 per sq mi$64,481Monticello49037
San Juan CountyWashington18,577173.9 sq mi107 per sq mi$84,800Friday Harbor53055
San Luis Obispo CountyCalifornia282,3673,301 sq mi85.5 per sq mi$97,446San Luis Obispo06079
San Mateo CountyCalifornia743,568448.6 sq mi1,658 per sq mi$158,855Redwood City06081
San Miguel CountyColorado7,7531,287 sq mi6.0 per sq mi$79,024Telluride08113
San Miguel CountyNew Mexico26,2604,722 sq mi5.6 per sq mi$49,431Las Vegas35047
San Patricio CountyTexas72,053693.3 sq mi104 per sq mi$69,704Sinton48409
San Saba CountyTexas5,7871,135 sq mi5.1 per sq mi$55,819San Saba48411
Sanborn CountySouth Dakota2,388569.2 sq mi4.2 per sq mi$78,750Woonsocket46111
Sanders CountyMontana14,0622,760 sq mi5.1 per sq mi$57,476Thompson Falls30089
Sandoval CountyNew Mexico159,5653,710 sq mi43.0 per sq mi$86,636Bernalillo35043
Sandusky CountyOhio58,655408.2 sq mi144 per sq mi$62,295Fremont39143
Sangamon CountyIllinois194,170868.2 sq mi224 per sq mi$75,357Springfield17167
Sanilac CountyMichigan40,083962.6 sq mi41.6 per sq mi$58,863Sandusky26151
Sanpete CountyUtah31,4531,590 sq mi19.8 per sq mi$70,083Manti49039
Santa Barbara CountyCalifornia442,0652,734 sq mi162 per sq mi$98,161Santa Barbara06083
Santa Clara CountyCalifornia1,914,3911,291 sq mi1,483 per sq mi$164,281San Jose06085
Santa Cruz CountyArizona50,0201,236 sq mi40.5 per sq mi$55,217Nogales04023
Santa Cruz CountyCalifornia258,852445.1 sq mi582 per sq mi$111,093Santa Cruz06087
Santa Fe CountyNew Mexico156,9071,910 sq mi82.1 per sq mi$79,071Santa Fe35049
Santa Rosa CountyFlorida211,1151,012 sq mi209 per sq mi$91,922Milton12113
Sarasota CountyFlorida479,958556.1 sq mi863 per sq mi$83,416Sarasota12115
Saratoga CountyNew York241,343810 sq mi298 per sq mi$100,787Ballston Spa36091
Sargent CountyNorth Dakota3,711858.5 sq mi4.3 per sq mi$77,946Forman38081
Sarpy CountyNebraska208,303238 sq mi875 per sq mi$103,321Papillion31153
Sauk CountyWisconsin66,652831.6 sq mi80.2 per sq mi$79,541Baraboo55111
Saunders CountyNebraska23,702748.7 sq mi31.7 per sq mi$94,066Wahoo31155
Sawyer CountyWisconsin18,8461,258 sq mi15.0 per sq mi$60,801Hayward55113
Schenectady CountyNew York162,581204.7 sq mi794 per sq mi$79,623Schenectady36093
Schleicher CountyTexas2,2451,311 sq mi1.7 per sq mi$86,694Eldorado48413
Schley CountyGeorgia4,593166.9 sq mi27.5 per sq mi$56,875Ellaville13249
Schoharie CountyNew York30,176621.8 sq mi48.5 per sq mi$70,133Schoharie36095
Schoolcraft CountyMichigan8,1871,172 sq mi7.0 per sq mi$56,782Manistique26153
Schuyler CountyIllinois6,657437.3 sq mi15.2 per sq mi$65,948Rushville17169
Schuyler CountyMissouri4,140307.3 sq mi13.5 per sq mi$61,205Lancaster29197
Schuyler CountyNew York16,924328.3 sq mi51.5 per sq mi$67,663Watkins Glen36097
Schuylkill CountyPennsylvania145,085778.8 sq mi186 per sq mi$68,313Pottsville42107
Scioto CountyOhio71,365610.2 sq mi117 per sq mi$50,609Portsmouth39145
Scotland CountyMissouri4,796436.5 sq mi11.0 per sq mi$68,913Memphis29199
Scotland CountyNorth Carolina33,322319.1 sq mi104 per sq mi$45,730Laurinburg37165
Scott CountyArkansas9,965892.9 sq mi11.2 per sq mi$43,270Waldron05127
Scott CountyIllinois4,866250.8 sq mi19.4 per sq mi$66,705Winchester17171
Scott CountyIndiana25,053190.4 sq mi132 per sq mi$56,352Scottsburg18143
Scott CountyIowa175,259458.1 sq mi383 per sq mi$78,277Davenport19163
Scott CountyKansas4,815717.6 sq mi6.7 per sq mi$68,839Scott City20171
Scott CountyKentucky62,262282.2 sq mi221 per sq mi$85,158Georgetown21209
Scott CountyMinnesota159,017356.1 sq mi447 per sq mi$119,314Shakopee27139
Scott CountyMississippi28,073609.2 sq mi46.1 per sq mi$48,786Forest28123
Scott CountyMissouri37,975420 sq mi90.4 per sq mi$62,782Benton29201
Scott CountyTennessee22,671532.3 sq mi42.6 per sq mi$44,711Huntsville47151
Scott CountyVirginia21,200535.8 sq mi39.6 per sq mi$46,349Gate City51169
Scotts Bluff CountyNebraska35,586739.6 sq mi48.1 per sq mi$63,614Gering31157
Screven CountyGeorgia14,408645.8 sq mi22.3 per sq mi$52,792Sylvania13251
Scurry CountyTexas16,162905.4 sq mi17.8 per sq mi$60,039Snyder48415
Searcy CountyArkansas7,848665.9 sq mi11.8 per sq mi$44,426Marshall05129
Sebastian CountyArkansas130,641531.2 sq mi246 per sq mi$57,790Fort Smith05131
Sedgwick CountyColorado2,247548 sq mi4.1 per sq mi$52,386Julesburg08115
Sedgwick CountyKansas538,433997 sq mi540 per sq mi$69,365Wichita20173
Seminole CountyFlorida491,884309.4 sq mi1,590 per sq mi$85,761Sanford12117
Seminole CountyGeorgia9,162237.6 sq mi38.6 per sq mi$49,495Donalsonville13253
Seminole CountyOklahoma23,441632.8 sq mi37.0 per sq mi$48,062Wewoka40133
Seneca CountyNew York32,883323.7 sq mi102 per sq mi$68,089Waterloo36099
Seneca CountyOhio54,522551 sq mi98.9 per sq mi$66,025Tiffin39147
Sequatchie CountyTennessee17,861265.9 sq mi67.2 per sq mi$58,750Dunlap47153
Sequoyah CountyOklahoma40,842673.6 sq mi60.6 per sq mi$51,093Sallisaw40135
Sevier CountyArkansas15,758563.6 sq mi28.0 per sq mi$53,527De Queen05133
Sevier CountyTennessee101,342592.5 sq mi171 per sq mi$62,581Sevierville47155
Sevier CountyUtah22,8271,910 sq mi11.9 per sq mi$74,884Richfield49041
Seward CountyKansas21,073639.7 sq mi32.9 per sq mi$63,827Liberal20175
Seward CountyNebraska18,032571.4 sq mi31.6 per sq mi$82,444Seward31159
Shackelford CountyTexas3,197914.3 sq mi3.5 per sq mi$73,047Albany48417
Shannon CountyMissouri7,2851,004 sq mi7.3 per sq mi$55,222Eminence29203
Sharkey CountyMississippi3,097431.7 sq mi7.2 per sq mi$40,000Rolling Fork28125
Sharp CountyArkansas18,122604.6 sq mi30.0 per sq mi$44,637Ash Flat05135
Shasta CountyCalifornia181,6483,776 sq mi48.1 per sq mi$72,636Redding06089
Shawano CountyWisconsin41,560893.2 sq mi46.5 per sq mi$66,479Shawano55115
Shawnee CountyKansas178,607544 sq mi328 per sq mi$67,104Topeka20177
Sheboygan CountyWisconsin118,047511.5 sq mi231 per sq mi$73,094Sheboygan55117
Shelby CountyAlabama238,552785.5 sq mi304 per sq mi$97,961Columbiana01117
Shelby CountyIllinois20,576758.5 sq mi27.1 per sq mi$72,095Shelbyville17173
Shelby CountyIndiana45,882411.1 sq mi112 per sq mi$72,190Shelbyville18145
Shelby CountyIowa11,689590.8 sq mi19.8 per sq mi$72,738Harlan19165
Shelby CountyKentucky51,243379.8 sq mi135 per sq mi$82,604Shelbyville21211
Shelby CountyMissouri5,870500.9 sq mi11.7 per sq mi$51,594Shelbyville29205
Shelby CountyOhio48,065407.7 sq mi118 per sq mi$73,978Sidney39149
Shelby CountyTennessee910,226752.8 sq mi1,209 per sq mi$63,767Memphis47157
Shelby CountyTexas24,286795.6 sq mi30.5 per sq mi$49,776Center48419
Shenandoah CountyVirginia45,839508.1 sq mi90.2 per sq mi$67,191Woodstock51171
Sherburne CountyMinnesota104,194432.9 sq mi241 per sq mi$105,466Elk River27141
Sheridan CountyKansas2,427896 sq mi2.7 per sq mi$73,750Hoxie20179
Sheridan CountyMontana3,4361,677 sq mi2.1 per sq mi$70,147Plentywood30091
Sheridan CountyNebraska4,8092,440 sq mi2.0 per sq mi$60,121Rushville31161
Sheridan CountyNorth Dakota1,296972.2 sq mi1.3 per sq mi$62,639McClusky38083
Sheridan CountyWyoming33,2412,523 sq mi13.2 per sq mi$71,388Sheridan56033
Sherman CountyKansas5,7631,056 sq mi5.5 per sq mi$61,750Goodland20181
Sherman CountyNebraska2,924565.9 sq mi5.2 per sq mi$63,578Loup City31163
Sherman CountyOregon2,051823.6 sq mi2.5 per sq mi$60,161Moro41055
Sherman CountyTexas2,781922.9 sq mi3.0 per sq mi$61,250Stratford48421
Shiawassee CountyMichigan67,681531.1 sq mi127 per sq mi$67,404Corunna26155
Shoshone CountyIdaho14,1302,637 sq mi5.4 per sq mi$55,527Wallace16079
Sibley CountyMinnesota15,356589 sq mi26.1 per sq mi$77,634Gaylord27143
Sierra CountyCalifornia3,098953.2 sq mi3.3 per sq mi$63,355Downieville06091
Sierra CountyNew Mexico11,3954,181 sq mi2.7 per sq mi$41,600Truth or Consequences35051
Silver Bow CountyMontana36,118718 sq mi50.3 per sq mi$61,754Butte30093
Simpson CountyKentucky20,788234.2 sq mi88.8 per sq mi$59,858Franklin21213
Simpson CountyMississippi25,498589.2 sq mi43.3 per sq mi$56,381Mendenhall28127
Sioux CountyIowa36,774767.9 sq mi47.9 per sq mi$86,098Orange City19167
Sioux CountyNebraska1,1882,067 sq mi0.58 per sq mi$53,929Harrison31165
Sioux CountyNorth Dakota3,6671,094 sq mi3.4 per sq mi$42,083Fort Yates38085
Siskiyou CountyCalifornia42,0136,279 sq mi6.7 per sq mi$59,095Yreka06093
Sitka City and BoroughAlaska8,3192,870 sq mi2.9 per sq mi$101,727Sitka02220
Skagit CountyWashington132,9751,730 sq mi76.9 per sq mi$89,263Mount Vernon53057
Skagway MunicipalityAlaska1,104442.9 sq mi2.5 per sq mi$81,136Skagway02230
Skamania CountyWashington12,6691,658 sq mi7.6 per sq mi$93,265Stevenson53059
Slope CountyNorth Dakota6281,215 sq mi0.52 per sq mi$71,250Amidon38087
Smith CountyKansas3,566895.5 sq mi4.0 per sq mi$59,135Smith Center20183
Smith CountyMississippi13,991636.3 sq mi22.0 per sq mi$60,916Raleigh28129
Smith CountyTennessee20,981314.3 sq mi66.8 per sq mi$66,293Carthage47159
Smith CountyTexas252,549921.5 sq mi274 per sq mi$74,192Tyler48423
Smyth CountyVirginia28,882451.4 sq mi64.0 per sq mi$49,883Marion51173
Snohomish CountyWashington870,6562,087 sq mi417 per sq mi$111,246Everett53061
Snyder CountyPennsylvania39,655328.8 sq mi121 per sq mi$66,876Middleburg42109
Socorro CountyNew Mexico15,8386,646 sq mi2.4 per sq mi$36,570Socorro35053
Solano CountyCalifornia455,376821.7 sq mi554 per sq mi$100,401Fairfield06095
Somerset CountyMaine51,6203,924 sq mi13.2 per sq mi$58,179Skowhegan23025
Somerset CountyMaryland24,973319.7 sq mi78.1 per sq mi$64,943Princess Anne24039
Somerset CountyNew Jersey356,486301.9 sq mi1,181 per sq mi$140,374Somerville34035
Somerset CountyPennsylvania72,0041,075 sq mi67.0 per sq mi$61,446Somerset42111
Somervell CountyTexas10,261186.2 sq mi55.1 per sq mi$79,825Glen Rose48425
Sonoma CountyCalifornia486,4441,575 sq mi309 per sq mi$104,674Santa Rosa06097
South Central Connecticut Planning RegionConnecticut578,741367.3 sq mi1,576 per sq mi$88,197Not available09170
Southampton CountyVirginia18,110599.2 sq mi30.2 per sq mi$70,795Courtland51175
Southeast Fairbanks Census AreaAlaska7,27024,839 sq mi0.29 per sq mi$73,882Not available02240
Southeastern Connecticut Planning RegionConnecticut284,015598.1 sq mi475 per sq mi$86,586Not available09180
Spalding CountyGeorgia70,775196 sq mi361 per sq mi$62,071Griffin13255
Spartanburg CountySouth Carolina380,857808.4 sq mi471 per sq mi$66,234Spartanburg45083
Spencer CountyIndiana20,061396.9 sq mi50.5 per sq mi$74,506Rockport18147
Spencer CountyKentucky20,998186.7 sq mi112 per sq mi$102,618Taylorsville21215
Spink CountySouth Dakota6,1551,503 sq mi4.1 per sq mi$70,139Redfield46115
Spokane CountyWashington558,3441,764 sq mi316 per sq mi$78,582Spokane53063
Spotsylvania CountyVirginia155,388401.9 sq mi387 per sq mi$112,738Spotsylvania Courthouse51177
St. Bernard ParishLouisiana45,642377.5 sq mi121 per sq mi$58,651Chalmette22087
St. Charles ParishLouisiana50,586277.7 sq mi182 per sq mi$80,897Hahnville22089
St. Charles CountyMissouri426,499560.3 sq mi761 per sq mi$104,692St. Charles29183
St. Clair CountyAlabama98,206631.6 sq mi155 per sq mi$77,463Ashville01115
St. Clair CountyIllinois250,708657.7 sq mi381 per sq mi$73,854Belleville17163
St. Clair CountyMichigan160,486721.5 sq mi222 per sq mi$71,270Port Huron26147
St. Clair CountyMissouri9,976675 sq mi14.8 per sq mi$53,043Osceola29185
St. Croix CountyWisconsin98,276722.2 sq mi136 per sq mi$103,046Hudson55109
St. Francis CountyArkansas21,800634.8 sq mi34.3 per sq mi$42,574Forrest City05123
St. Francois CountyMissouri67,809451.9 sq mi150 per sq mi$57,477Farmington29187
St. Helena ParishLouisiana10,758408.5 sq mi26.3 per sq mi$41,934Greensburg22091
St. James ParishLouisiana18,938237.9 sq mi79.6 per sq mi$65,531Convent22093
St. John the Baptist ParishLouisiana39,875214.5 sq mi186 per sq mi$66,630Edgard22095
St. Johns CountyFlorida346,328600.7 sq mi577 per sq mi$109,839St. Augustine12109
St. Joseph CountyIndiana272,861457.8 sq mi596 per sq mi$66,868South Bend18141
St. Joseph CountyMichigan60,968500.6 sq mi122 per sq mi$66,425Centreville26149
St. Landry ParishLouisiana80,765923.4 sq mi87.5 per sq mi$44,462Opelousas22097
St. Lawrence CountyNew York105,4882,680 sq mi39.4 per sq mi$62,850Canton36089
St. Louis CountyMinnesota200,5186,248 sq mi32.1 per sq mi$70,069Duluth27137
St. Louis CountyMissouri990,911508.5 sq mi1,949 per sq mi$82,936Clayton29189
St. Louis cityMissouri278,14461.7 sq mi4,507 per sq mi$56,160St. Louis city29510
St. Lucie CountyFlorida402,449571.9 sq mi704 per sq mi$71,457Fort Pierce12111
St. Martin ParishLouisiana51,106737.5 sq mi69.3 per sq mi$55,960St. Martinville22099
St. Mary ParishLouisiana46,552558.5 sq mi83.3 per sq mi$52,576Franklin22101
St. Mary's CountyMaryland116,692358.6 sq mi325 per sq mi$119,446Leonardtown24037
St. Tammany ParishLouisiana279,108845.3 sq mi330 per sq mi$81,202Covington22103
Stafford CountyKansas4,005792 sq mi5.1 per sq mi$64,226St. John20185
Stafford CountyVirginia170,803268.5 sq mi636 per sq mi$137,807Stafford51179
Stanislaus CountyCalifornia557,7191,496 sq mi373 per sq mi$81,468Modesto06099
Stanley CountySouth Dakota3,0181,444 sq mi2.1 per sq mi$87,712Fort Pierre46117
Stanly CountyNorth Carolina68,830395.1 sq mi174 per sq mi$60,704Albemarle37167
Stanton CountyKansas1,986680.4 sq mi2.9 per sq mi$71,700Johnson City20187
Stanton CountyNebraska5,744427.6 sq mi13.4 per sq mi$80,687Stanton31167
Stark CountyIllinois5,319288.1 sq mi18.5 per sq mi$62,878Toulon17175
Stark CountyNorth Dakota34,0131,335 sq mi25.5 per sq mi$84,449Dickinson38089
Stark CountyOhio373,771574.9 sq mi650 per sq mi$67,934Canton39151
Starke CountyIndiana23,425309.1 sq mi75.8 per sq mi$63,960Knox18149
Starr CountyTexas66,3191,223 sq mi54.2 per sq mi$37,639Rio Grande City48427
Staunton cityVirginia26,80119.9 sq mi1,345 per sq mi$65,581Staunton city51790
Ste. Genevieve CountyMissouri18,689499.2 sq mi37.4 per sq mi$66,339Ste. Genevieve29186
Stearns CountyMinnesota164,1101,343 sq mi122 per sq mi$77,066St. Cloud27145
Steele CountyMinnesota37,464429.6 sq mi87.2 per sq mi$84,196Owatonna27147
Steele CountyNorth Dakota1,797712.1 sq mi2.5 per sq mi$77,500Finley38091
Stephens CountyGeorgia27,854178.9 sq mi156 per sq mi$54,754Toccoa13257
Stephens CountyOklahoma44,310870.2 sq mi50.9 per sq mi$61,620Duncan40137
Stephens CountyTexas9,380896.7 sq mi10.5 per sq mi$58,008Breckenridge48429
Stephenson CountyIllinois43,220564.2 sq mi76.6 per sq mi$64,043Freeport17177
Sterling CountyTexas1,349923.4 sq mi1.5 per sq mi$64,954Sterling City48431
Steuben CountyIndiana34,799308.8 sq mi113 per sq mi$74,911Angola18151
Steuben CountyNew York91,8551,391 sq mi66.1 per sq mi$65,887Bath36101
Stevens CountyKansas4,984727.4 sq mi6.9 per sq mi$64,178Hugoton20189
Stevens CountyMinnesota9,747563.7 sq mi17.3 per sq mi$75,733Morris27149
Stevens CountyWashington49,6682,477 sq mi20.1 per sq mi$69,327Colville53065
Stewart CountyGeorgia4,631458.8 sq mi10.1 per sq mi$33,250Lumpkin13259
Stewart CountyTennessee14,439459.8 sq mi31.4 per sq mi$63,114Dover47161
Stillwater CountyMontana9,4451,797 sq mi5.3 per sq mi$84,732Columbus30095
Stoddard CountyMissouri28,284823.1 sq mi34.4 per sq mi$57,957Bloomfield29207
Stokes CountyNorth Carolina46,126449.3 sq mi103 per sq mi$62,969Danbury37169
Stone CountyArkansas12,703606.4 sq mi20.9 per sq mi$40,943Mountain View05137
Stone CountyMississippi19,654445.5 sq mi44.1 per sq mi$61,413Wiggins28131
Stone CountyMissouri32,503463.8 sq mi70.1 per sq mi$63,520Galena29209
Stonewall CountyTexas1,186916.3 sq mi1.3 per sq mi$56,875Aspermont48433
Storey CountyNevada4,260263.8 sq mi16.1 per sq mi$93,409Virginia City32029
Story CountyIowa101,291572.5 sq mi177 per sq mi$69,685Nevada19169
Strafford CountyNew Hampshire135,043367.5 sq mi367 per sq mi$88,570Dover33017
Stutsman CountyNorth Dakota21,4142,222 sq mi9.6 per sq mi$61,856Jamestown38093
Sublette CountyWyoming8,9294,886 sq mi1.8 per sq mi$83,597Pinedale56035
Suffolk CountyMassachusetts791,89158.3 sq mi13,593 per sq mi$95,631Boston25025
Suffolk CountyNew York1,546,090910.9 sq mi1,697 per sq mi$130,686Riverhead36103
Suffolk cityVirginia104,699399.2 sq mi262 per sq mi$92,666Suffolk city51800
Sullivan CountyIndiana20,831447.2 sq mi46.6 per sq mi$56,204Sullivan18153
Sullivan CountyMissouri5,738648 sq mi8.9 per sq mi$56,964Milan29211
Sullivan CountyNew Hampshire43,961537.9 sq mi81.7 per sq mi$80,858Newport33019
Sullivan CountyNew York80,586968.1 sq mi83.2 per sq mi$72,382Monticello36105
Sullivan CountyPennsylvania5,856449.9 sq mi13.0 per sq mi$69,764Laporte42113
Sullivan CountyTennessee163,759413.5 sq mi396 per sq mi$58,807Blountville47163
Sully CountySouth Dakota1,4791,007 sq mi1.5 per sq mi$72,578Onida46119
Summers CountyWest Virginia11,532360.6 sq mi32.0 per sq mi$40,699Hinton54089
Summit CountyColorado31,517608.3 sq mi51.8 per sq mi$109,773Breckenridge08117
Summit CountyOhio538,376412.7 sq mi1,305 per sq mi$71,622Akron39153
Summit CountyUtah43,1411,871 sq mi23.1 per sq mi$138,114Coalville49043
Sumner CountyKansas22,3121,182 sq mi18.9 per sq mi$63,951Wellington20191
Sumner CountyTennessee215,538529.5 sq mi407 per sq mi$90,301Gallatin47165
Sumter CountyAlabama11,588903.8 sq mi12.8 per sq mi$33,310Livingston01119
Sumter CountyFlorida157,772557.1 sq mi283 per sq mi$76,508Bushnell12119
Sumter CountyGeorgia28,801482.9 sq mi59.6 per sq mi$42,653Americus13261
Sumter CountySouth Carolina105,067665.1 sq mi158 per sq mi$56,693Sumter45085
Sunflower CountyMississippi22,893697.8 sq mi32.8 per sq mi$39,956Indianola28133
Surry CountyNorth Carolina72,287532.6 sq mi136 per sq mi$55,656Dobson37171
Surry CountyVirginia6,603278.9 sq mi23.7 per sq mi$78,041Surry51181
Susquehanna CountyPennsylvania38,237823.5 sq mi46.4 per sq mi$68,487Montrose42115
Sussex CountyDelaware277,140936.1 sq mi296 per sq mi$81,497Georgetown10005
Sussex CountyNew Jersey148,063518.5 sq mi286 per sq mi$116,186Newton34037
Sussex CountyVirginia10,755490.2 sq mi21.9 per sq mi$63,530Sussex51183
Sutter CountyCalifornia98,787602.7 sq mi164 per sq mi$79,704Yuba City06101
Sutton CountyTexas3,2031,454 sq mi2.2 per sq mi$78,906Sonora48435
Suwannee CountyFlorida48,149688.6 sq mi69.9 per sq mi$56,658Live Oak12121
Swain CountyNorth Carolina14,024527.7 sq mi26.6 per sq mi$52,349Bryson City37173
Sweet Grass CountyMontana3,7621,856 sq mi2.0 per sq mi$77,000Big Timber30097
Sweetwater CountyWyoming41,26710,427 sq mi4.0 per sq mi$75,034Green River56037
Swift CountyMinnesota9,763742 sq mi13.2 per sq mi$60,412Benson27151
Swisher CountyTexas6,703890.2 sq mi7.5 per sq mi$36,165Tulia48437
Switzerland CountyIndiana10,037220.7 sq mi45.5 per sq mi$65,343Vevay18155

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Retrieved 30 August 2026.