| ZIP Codes: | 13 ZIP Codes (11 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 515 / 641 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:55 PM |
| Population: | 54,263 [See All] |
| FIPS: | 19181 |
| CBSA: | Des Moines-West Des Moines, IA |
| Land Area: | 622 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 41.3425, -93.5906 |
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54,263 residents live across 13 ZIPs covering 622 sq mi, served by 13 distinct USPS-recognized cities.
Population moved from 46,292 to 54,028 from 2014 to 2024 — a +16.7% change. 7 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 50001 (Ackworth, $131,875 median) and poorest ZIP 50160 (Martensdale, $57,500) are 15.4 miles apart — a 2.3× income gap across local geography.
Median home values vary 3.5× across this county — from $151,600 in 50139 (Lacona) to $533,800 in 50061 (Cumming).
Density varies 124× across the county — from 12 people/sq mi in 50139 (Lacona) to 1,497 in 50160 (Martensdale).
Educational attainment ranges from 15.6% bachelor's+ in 50160 (Martensdale) to 42.9% in 50061 (Cumming) — the breadth of educational profiles across the area.
Within Iowa, this is the #11 most populous of 99 counties and ranks #4 for median household income with the #2 fastest decade growth .
Weighted by population, the typical household earns about $96,941 across the county — reflecting what a typical resident sees, not a simple ZIP average.
33.8% of adults age 25+ hold a bachelor's degree or higher (12,181 of 36,032 reporting).
11 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.
Warren County grew 17.2% over the past decade — concentrated in 4 high-growth ZIPs:
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 50125 | Indianola | Standard | 20,121 | $84,848 | 164.4 | 3.8% |
| 50211 | Norwalk | Standard | 16,835 | $103,712 | 57.7 | 39.6% |
| 50047 | Carlisle | Standard | 6,690 | $106,389 | 58.5 | 19.8% |
| 50061 | Cumming | Standard | 2,123 | $130,714 | 32.1 | 30.4% |
| 50166 | Milo | Standard | 2,023 | $107,279 | 58.2 | 32.6% |
| 50229 | Prole | Standard | 1,585 | $123,164 | 43.7 | 110.8% |
| 50210 | New Virginia | Standard | 1,487 | $87,813 | 78.8 | -11.9% |
| 50139 | Lacona | Standard | 1,025 | $72,400 | 84.8 | -31.0% |
| 50118 | Hartford | Standard | 920 | $73,750 | 14.3 | -0.4% |
| 50001 | Ackworth | Standard | 650 | $131,875 | 25.3 | -16.8% |
| 50160 | Martensdale | Standard | 569 | $57,500 | 0.4 | 18.0% |
| 50145 | Liberty Center | PO Box | 139 | $50,962 | 3.6 | — |
| 50241 | Saint Marys | PO Box | 96 | $77,500 | 0.6 | — |