ZIP codes

ZIP codes in Polk County, Iowa

Polk County has 41 ZIP codes. 23 lie entirely inside it and 18 are shared with neighboring counties, so part of their land and their people are elsewhere. About 511,832 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 41; 1 more just touches the border (under 1% of their land)
Entirely inside: 23; 99% or more of their land
Shared with other counties: 18; Most with Dallas County (7)
Most populated ZIP: 50023; 46,306 people · Ankeny
Least populated ZIP: 50007; 444 people · Alleman; 1 more with nobody living there
Largest ZIP by land: 50161; 79 sq mi · Maxwell

Map of the ZIP codes in Polk County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Polk County

41 ZIP codes in Polk County, IA, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
50007	Alleman	444	100%	444
50009	Altoona	22,886	100%	22,886
50021	Ankeny	30,283	100%	30,283
50023	Ankeny	46,306	100%	46,306
50032	—	707	100%	707
50035	Bondurant	10,131	100%	10,131
50046	Cambridge	1,554	27%	≈ 200
50047	Carlisle	6,690	24%	≈ 2,768
50061	West Des Moines	2,123	6.8%	≈ 402
50073	Elkhart	1,208	100%	1,208
50109	Granger	3,309	53%	≈ 2,612
50111	Grimes	16,865	66%	≈ 16,049
50124	Huxley	4,859	26%	≈ 560
50131	Johnston	24,583	100%	24,583
50156	Madrid	4,575	16%	≈ 1,943
50161	Maxwell	2,296	56%	≈ 1,590
50168	Mingo	826	4.3%	≈ 168
50169	Mitchellville	3,667	56%	≈ 2,893
50226	Polk City	7,759	99.3%	≈ 7,742
50237	Runnells	3,635	78%	≈ 3,296
50243	Sheldahl	361	37%	≈ 130
50244	Slater	1,729	60%	≈ 636
50265	West Des Moines	33,488	97%	≈ 33,444
50266	West Des Moines	37,523	25%	≈ 14,935
50309	Des Moines	10,110	100%	10,110
50310	Des Moines	31,177	100%	31,177
50311	Des Moines	14,574	100%	14,574
50312	Des Moines	15,802	100%	15,802
50313	Des Moines	17,440	100%	17,440
50314	Des Moines	10,438	100%	10,438
50315	Des Moines	34,816	100%	34,816
50316	Des Moines	16,710	100%	16,710
50317	Des Moines	36,548	100%	36,548
50319	Des Moines	0	100%	0
50320	Des Moines	24,807	78%	≈ 23,331
50321	Des Moines	7,900	99.9%	≈ 7,899
50322	Urbandale	31,931	100%	31,931
50323	Urbandale	17,265	39%	≈ 6,504
50324	Windsor Heights	5,143	100%	5,143
50325	Clive	19,012	60%	≈ 10,278
50327	Pleasant Hill	13,177	100%	13,177

They also touch the county with under 1% of their land, so they aren’t counted: 50228.

ZIP codes shared with other counties

These 18 ZIP codes have part of their land in another county. The first figure is the share of their land in Polk County; then, where the rest lies.

50046 (Cambridge): 27% here; 73% in Story County.
50047 (Carlisle): 24% here; 76% in Warren County.
50061 (West Des Moines): 6.8% here; 52% in Madison County, 34% in Warren County, and 7.1% in Dallas County.
50109 (Granger): 53% here; 47% in Dallas County.
50111 (Grimes): 66% here; 34% in Dallas County.
50124 (Huxley): 26% here; 74% in Story County.
50156 (Madrid): 16% here; 77% in Boone County and 6.6% in Dallas County.
50161 (Maxwell): 56% here; 41% in Story County and 3.3% in Jasper County.
50168 (Mingo): 4.3% here; 96% in Jasper County.
50169 (Mitchellville): 56% here; 44% in Jasper County.
50237 (Runnells): 78% here; 13% in Jasper County and 8.6% in Marion County.
50243 (Sheldahl): 37% here; 32% in Story County and 31% in Boone County.
50244 (Slater): 60% here; 38% in Story County and 2.2% in Boone County.
50265 (West Des Moines): 97% here; 3.3% in Warren County.
50266 (West Des Moines): 25% here; 75% in Dallas County.
50320 (Des Moines): 78% here; 22% in Warren County.
50323 (Urbandale): 39% here; 61% in Dallas County.
50325 (Clive): 60% here; 40% in Dallas County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Des Moines (12), West Des Moines (3), Ankeny (2), Urbandale (2), Alleman (1), and Altoona (1); 25 places in all.

They start with 4 different three-digit prefixes, one per USPS sorting center: 500, 501, 502, and 503.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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