County Maps US

Tama County, Iowa

A county in Iowa, ranked 43 of 99 by population.

CountyFIPS 19171

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

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Population
16,796
-254 (-1.5%) since 2020
Land area
721
square miles. A further 0.1% of the total area is water
Population density
23.3
people per square mile, computed rather than published
County seat
Toledo
Seat of county government.
Established
1843
182 years ago
Largest city
Tama city
Population 3,011.

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 Tama 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 Tama County, Iowa 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 659 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 Tama County ranks

Position among the 99 counties of Iowa, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn IowaNationally
Population16,79643rd of 991,987th of 3,144
Land area721 sq mi9th of 991,240th of 3,144
Population density23.3 per sq mi58th of 992,112th of 3,144
Median household income$70,78153rd of 991,140th of 3,143

Full data for Tama County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population16,796Vintage 2025 Population Estimates
Population in 202017,050Vintage 2025 Population Estimates
2020 estimates base?17,102Vintage 2025 Population Estimates
Land area721 sq mi2025 Gazetteer Files
Water area1.1 sq mi2025 Gazetteer Files
Total area722.1 sq mi2025 Gazetteer Files
Population density?23.3 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$70,781American Community Survey 2020-2024 5-Year Estimates
Median home value$148,600American Community Survey 2020-2024 5-Year Estimates
Median age41.5American Community Survey 2020-2024 5-Year Estimates
Households6,720American Community Survey 2020-2024 5-Year Estimates
Housing units7,595American 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
+14
210 births, 196 deaths
Net migration
-20
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 Tama 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
Benton CountyIowa30 mi26,004
Poweshiek CountyIowa24 mi18,368
Marshall CountyIowa24 mi39,890
Grundy CountyIowa18 mi12,361
Black Hawk CountyIowa12 mi131,532
Iowa CountyIowaa single point16,504
Jasper CountyIowaa single point38,153

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

All 99 counties of Iowa

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

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