County Maps US

New Madrid County, Missouri

A county in Missouri, ranked 67 of 115 by population.

CountyFIPS 29143

Within Missouri
New Madrid County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks New Madrid, the county seat, located via the 2025 Census Gazetteer.

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Population
15,086
-1,243 (-7.6%) since 2020
Land area
674.9
square miles. A further 3.1% of the total area is water
Population density
22.4
people per square mile, computed rather than published
County seat
New Madrid
Seat of county government.
Established
1812
213 years ago
Largest city
Portageville city
Population 2,702 for the whole place, which extends beyond this county.

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; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of New Madrid County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of New Madrid County, Missouri from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 778 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where New Madrid County ranks

Position among the 115 counties of Missouri, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn MissouriNationally
Population15,08667th of 1152,092nd of 3,144
Land area674.9 sq mi36th of 1151,396th of 3,144
Population density22.4 per sq mi72nd of 1152,148th of 3,144
Median household income$51,88194th of 1152,669th of 3,143

Full data for New Madrid County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population15,086Vintage 2025 Population Estimates
Population in 202016,329Vintage 2025 Population Estimates
2020 estimates base?16,430Vintage 2025 Population Estimates
Land area674.9 sq mi2025 Gazetteer Files
Water area21.7 sq mi2025 Gazetteer Files
Total area696.6 sq mi2025 Gazetteer Files
Population density?22.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$51,881American Community Survey 2020-2024 5-Year Estimates
Median home value$111,800American Community Survey 2020-2024 5-Year Estimates
Median age41.3American Community Survey 2020-2024 5-Year Estimates
Households6,695American Community Survey 2020-2024 5-Year Estimates
Housing units7,876American Community Survey 2020-2024 5-Year Estimates

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. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-74
178 births, 252 deaths
Net migration
-122
More people moved out than moved in.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 7 areas bordering New Madrid County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Stoddard CountyMissouri31 mi28,284
Pemiscot CountyMissouri31 mi14,465
Fulton CountyKentucky27 mi6,218
Mississippi CountyMissouri27 mi12,003
Lake CountyTennessee21 mi6,249
Dunklin CountyMissouri18 mi26,855
Scott CountyMissouri10 mi37,975

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 115 counties of Missouri

Open the interactive Missouri county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.