County Maps US

Jones County, Iowa

A county in Iowa, ranked 29 of 99 by population.

CountyFIPS 19105

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

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Population
21,253
+595 (+2.9%) since 2020
Land area
575.6
square miles. A further 0.3% of the total area is water
Population density
36.9
people per square mile, computed rather than published
County seat
Anamosa
Seat of county government.
Established
1837
188 years ago
Largest city
Anamosa city
Population 5,901.

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 Jones 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 Jones 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 794 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 Jones 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
Population21,25329th of 991,763rd of 3,144
Land area575.6 sq mi37th of 991,722nd of 3,144
Population density36.9 per sq mi29th of 991,750th of 3,144
Median household income$73,53135th of 99946th of 3,143

Full data for Jones County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population21,253Vintage 2025 Population Estimates
Population in 202020,658Vintage 2025 Population Estimates
2020 estimates base?20,648Vintage 2025 Population Estimates
Land area575.6 sq mi2025 Gazetteer Files
Water area1.5 sq mi2025 Gazetteer Files
Total area577.1 sq mi2025 Gazetteer Files
Population density?36.9 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$73,531American Community Survey 2020-2024 5-Year Estimates
Median home value$184,800American Community Survey 2020-2024 5-Year Estimates
Median age42.8American Community Survey 2020-2024 5-Year Estimates
Households8,198American Community Survey 2020-2024 5-Year Estimates
Housing units8,889American 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
-5
210 births, 215 deaths
Net migration
+86
More people moved in than moved out.

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

The 6 areas bordering Jones 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
Linn CountyIowa24 mi232,028
Cedar CountyIowa24 mi18,359
Jackson CountyIowa18 mi19,288
Delaware CountyIowa12 mi17,674
Dubuque CountyIowa12 mi99,381
Clinton CountyIowa6.0 mi46,002

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.