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NXS-GRX-USA · Northern America · Regions

Iowa

First-level unit, United States of America: people, area, the units inside and neighbours, with risk values when released.

Page GRX-USA-REdition Baseline Edition 2026Evidence close 2026-09-30ISO USA / USStatus UN member stateValues not yet publishedMethod v1.0.0-draft
3,249,060
people (GHSL 2025)
145,516 km²
area
0.9%
of United States of America
99
units inside

01মানচিত্র

Inside Iowa

The 99 ADM2 units of Iowa.

FIG 1 · 99 units inside Iowa
মানচিত্র লোড হচ্ছে

Units rise with people per km² · GHSL 2025 raster · terrain · ADM1 ADM2Risk values when released
Lowest fifthLow fifthMiddle fifthHigh fifthHighest fifthNo data
Column height and colour show people per km² by unit, in quantile fifths among the units shown (the key on the map gives the breaks); units with no people on the grid are grey, not the lowest class; the raster beneath is the GHSL 2025 population grid. Source observations, not index values. Select a unit to drill into the units inside it; the path above the map climbs back.
02Figures

People, area and density

Source observations from open grids summed inside the boundary; not index values.

মানুষ · GHSL 2025

3,249,060

0.9% of United States of America.

মানুষ · WorldPop 2025

2,980,023

-8% against GHSL; the two grids differ in method.

Area

145,516 km²

22 people per km².

Code

US-IA

Subdivision code as carried by the boundary source.

03Units

99 units inside Iowa

Each unit has its own page.

Boundary licences: Public Domain

Unit Code People (GHSL) People (WorldPop) Area km² Per km² Share Coast ≤ 10 m
Adair – 6,814 6,160 1,475.87 5 0.2% 0
Adams – 4,325 3,338 1,100.48 4 0.1% 0
Allamakee – 12,399 11,168 1,698.7 7 0.4% 0
Appanoose – 12,757 10,628 1,335.81 10 0.4% 0
Audubon – 6,057 4,717 1,145.13 5 0.2% 0
Benton – 25,549 22,027 1,859.17 14 0.8% 0
Black Hawk – 136,591 118,891 1,481.32 92 4.1% 0
Boone – 29,368 26,363 1,483.13 20 0.9% 0
Bremer – 23,047 20,852 1,136.45 20 0.7% 0
Buchanan – 22,241 18,970 1,481.01 15 0.7% 0
Buena Vista – 20,866 19,483 1,501.06 14 0.6% 0
Butler – 15,576 13,073 1,503.72 10 0.5% 0
Calhoun – 9,178 8,850 1,479.57 6 0.3% 0
Carroll – 21,033 18,779 1,475.65 14 0.6% 0
Cass – 14,109 11,208 1,460.47 10 0.4% 0
Cedar – 17,189 15,818 1,504.83 11 0.5% 0
Cerro Gordo – 45,803 39,276 1,486.02 31 1.4% 0
Cherokee – 11,995 10,159 1,490.86 8 0.4% 0
Chickasaw – 12,314 10,154 1,306.94 9 0.4% 0
Clarke – 9,276 9,015 1,116.59 8 0.3% 0
Clay – 17,576 14,986 1,479.23 12 0.5% 0
Clayton – 20,062 15,303 2,049.74 10 0.6% 0
Clinton – 51,059 43,242 1,837.12 28 1.5% 0
Crawford – 18,206 14,818 1,851.1 10 0.6% 0
Dallas – 84,716 107,864 1,528.79 55 2.6% 0
Davis – 8,947 8,451 1,304.83 7 0.3% 0
Decatur – 8,434 6,060 1,378.16 6 0.3% 0
Delaware – 17,762 15,511 1,497.95 12 0.5% 0
Des Moines – 39,793 32,685 1,114.76 36 1.2% 0
Dickinson – 17,233 16,926 1,043.99 17 0.5% 0
Dubuque – 97,172 91,936 1,591.24 61 2.9% 0
Emmet – 10,227 7,729 1,039.81 10 0.3% 0
Fayette – 22,309 18,123 1,890.14 12 0.7% 0
Floyd – 15,636 13,028 1,297.94 12 0.5% 0
Franklin – 11,441 8,856 1,506.79 8 0.3% 0
Fremont – 8,333 6,211 1,336.38 6 0.3% 0
Greene – 9,908 8,197 1,477.41 7 0.3% 0
Grundy – 12,668 11,157 1,299.67 10 0.4% 0
Guthrie – 11,342 9,417 1,533.81 7 0.3% 0
Hamilton – 15,884 13,432 1,494.22 11 0.5% 0
Hancock – 10,480 8,927 1,482.45 7 0.3% 0
Hardin – 16,353 13,853 1,473.66 11 0.5% 0
Harrison – 14,188 12,593 1,816.31 8 0.4% 0
Henry – 20,358 18,759 1,128.5 18 0.6% 0
Howard – 8,893 7,885 1,223.97 7 0.3% 0
Humboldt – 10,005 8,525 1,125.43 9 0.3% 0
Ida – 7,342 6,457 1,116.05 7 0.2% 0
Iowa – 16,300 14,666 1,525.21 11 0.5% 0
Jackson – 17,748 16,008 1,679.61 11 0.5% 0
Jasper – 38,296 35,778 1,895.42 20 1.2% 0
Jefferson – 17,756 13,688 1,131.46 16 0.5% 0
Johnson – 145,417 150,408 1,601.78 91 4.4% 0
Jones – 21,638 18,634 1,492.42 14 0.7% 0
Keokuk – 10,298 8,453 1,500.73 7 0.3% 0
Kossuth – 17,284 13,846 2,520.99 7 0.5% 0
Lee – 26,097 21,472 1,387.03 19 0.8% 0
Lincoln – 56,432 65,330 1,495.08 38 1.7% 0
Linn – 226,440 223,356 1,876.2 121 6.9% 0
Louisa – 12,188 10,290 1,078.67 11 0.4% 0
Lucas – 8,872 7,480 1,122.91 8 0.3% 0
Lyon – 12,937 12,256 1,514.46 9 0.4% 0
Madison – 16,466 15,383 1,454.95 11 0.5% 0
Mahaska – 23,387 20,072 1,482.97 16 0.7% 0
Marion – 35,471 31,145 1,475.39 24 1.1% 0
Marshall – 42,287 36,163 1,481.32 29 1.3% 0
Mills – 15,593 12,205 1,139.34 14 0.5% 0
Mitchell – 11,335 9,610 1,214.41 9 0.3% 0
Monona – 9,313 7,585 1,807.11 5 0.3% 0
Monroe – 7,890 5,996 1,122.64 7 0.2% 0
Montgomery – 10,553 8,907 1,099.48 10 0.3% 0
Muscatine – 43,724 39,454 1,162.87 38 1.3% 0
O’Brien – 13,119 10,776 1,484.58 9 0.4% 0
Osceola – 6,524 5,393 1,033.62 6 0.2% 0
পাতা – 15,543 12,877 1,386.32 11 0.5% 0
Palo Alto – 8,271 7,389 1,471.57 6 0.3% 0
Plymouth – 28,211 25,749 2,229.99 13 0.9% 0
Pocahontas – 7,007 6,156 1,494.68 5 0.2% 0
Polk – 527,347 488,106 1,530.22 345 16% 0
Pottawattamie – 125,981 109,984 2,482.89 51 3.8% 0
Poweshiek – 19,365 16,630 1,518.34 13 0.6% 0
Ringgold – 5,204 3,896 1,392.98 4 0.2% 0
Sac – 10,263 8,438 1,496.21 7 0.3% 0
Scott – 189,830 185,421 1,210 157 5.8% 0
Shelby – 12,070 10,359 1,529.79 8 0.4% 0
গল্প – 96,446 92,977 1,482.24 65 2.9% 0
Tama – 18,035 15,016 1,867.84 10 0.5% 0
Taylor – 6,547 5,361 1,383.63 5 0.2% 0
Union – 12,806 10,711 1,101.6 12 0.4% 0
Van Buren – 8,162 6,639 1,271.05 6 0.2% 0
Wapello – 35,314 31,585 1,127.44 31 1.1% 0
Warren – 44,567 46,078 1,483.01 30 1.4% 0
Washington – 22,562 20,881 1,477.21 15 0.7% 0
Wayne – 6,055 5,597 1,365.06 4 0.2% 0
Webster – 38,617 33,025 1,858.84 21 1.2% 0
Winnebago – 10,962 9,602 1,038.03 11 0.3% 0
Winneshiek – 22,081 17,748 1,788.35 12 0.7% 0
Woodbury – 97,436 94,218 2,263.86 43 3% 0
Worth – 8,144 7,094 1,037.8 8 0.2% 0
Wright – 13,079 11,322 1,502.75 9 0.4% 0
04উন্মুক্ততা

Open exposure layers

Count of H3 resolution-3 cells whose centre falls in the unit and that carry each Natural Earth layer.

Urban areas
1,005.4 H3 cells
বন্দর
None at this resolution
বিমানবন্দর
2 H3 cells
Major roads
6,189 H3 cells
রেলপথ
1,715.4 H3 cells
Rivers and lakes
1,349.5 H3 cells
05ঝুঁকি

Risk values

Values when released. Subnational risk values for Iowa publish with the edition from The Global Risks Index. Until then, run a scenario on open data for United States of America.
06Neighbours

Neighbouring units

07উৎস

Sources, credits and licences

ADM1 boundaries
geoBoundaries (William & Mary geoLab), gbOpen USA ADM1, source: United States Census Bureau, MAF/TIGER Database, licence: Public Domain · source · represents 2018
ADM2 boundaries
geoBoundaries (William & Mary geoLab), gbOpen USA ADM2, source: United States Census Bureau, MAF/TIGER Database, licence: Public Domain · source · represents 2018
Basemap
OpenFreeMap © OpenMapTiles (CC BY 4.0) · data © OpenStreetMap contributors (ODbL 1.0). Vector tiles requested by the reader’s browser, unmodified; the map falls back to plain land and sea when the host does not answer.
Terrain
Terrain Tiles (Mapzen, AWS Open Data), compiled from SRTM and other public elevation sources (NASA, USGS, ETOPO1, GMTED, EU-DEM under the Copernicus programme, Geoscience Australia, Kartverket, INEGI, LINZ, data.gov.uk). Display relief, not survey data.
People
GHSL 2025 population grid, European Commission Joint Research Centre (CC BY 4.0), shown at 0.05° and summed per unit; WorldPop 2025 (CC BY 4.0) as a second estimate. Units smaller than a grid cell take the density of the cell under them.
দেশ
Natural Earth (public domain).
Elevation
GEBCO Compilation Group (2024) GEBCO 2024 Grid (public domain), reduced to 0.05°: the share of each cell’s land at or below 10 m, weighted by GHSL 2025 people for the low coastal zone.
Position
Boundaries are shown for location only and take no position on any boundary, name or status.