| ZIP Codes: | 31 ZIP Codes (22 Standard, 6 PO Box, 3 Unique) [See All] |
| Area Code: | 319 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:11 PM |
| Population: | 231,125 [See All] |
| FIPS: | 19113 |
| CBSA: | Cedar Rapids, IA |
| Land Area: | 845 sq mi |
| Water Area: | 8 sq mi |
| Coordinates: | 42.0477, -91.6436 |
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231,125 residents live across 31 ZIPs covering 845 sq mi, served by 18 distinct USPS-recognized cities.
Population moved from 216,670 to 231,058 from 2014 to 2024 — a +6.6% change. 13 ZIPs gained residents, 9 lost.
The county's wealthiest ZIP 52411 (Cedar Rapids, $170,491 median) and poorest ZIP 52401 (Cedar Rapids, $35,060) are 6.0 miles apart — a 4.9× income gap across local geography.
Median home values vary 2.7× across this county — from $157,100 in 52401 (Cedar Rapids) to $423,200 in 52411 (Cedar Rapids).
Density varies 156× across the county — from 20 people/sq mi in 52218 (Coggon) to 3,142 in 52402 (Cedar Rapids).
Educational attainment ranges from 21.5% bachelor's+ in 52336 (Springville) to 58.0% in 52328 (Robins) — the breadth of educational profiles across the area.
Within Iowa, this is the #2 most populous of 99 counties and ranks #5 for median household income with the #7 fastest decade growth .
Hosts 3 single-entity Unique ZIPs: 52498Rockwell Collins ; 52499Life Investors Inc ; and 52497Cedar Rapids .
Weighted by population, the typical household earns about $81,565 across the county — reflecting what a typical resident sees, not a simple ZIP average.
34.6% of adults age 25+ hold a bachelor's degree or higher (54,902 of 158,619 reporting). The most-educated ZIPs cluster around Cedar Rapids.
22 Standard delivery, 6 PO Box only, 3 single-entity Unique ZIPs serve this county.
3 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 4.9× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 52404 | Cedar Rapids | Standard | 42,958 | $61,870 | 59.9 | 11.0% |
| 52402 | Cedar Rapids | Standard | 42,938 | $73,439 | 13.7 | 7.3% |
| 52302 | Marion | Standard | 42,706 | $87,983 | 73.7 | 11.4% |
| 52405 | Cedar Rapids | Standard | 26,526 | $70,123 | 10.4 | 7.4% |
| 52403 | Cedar Rapids | Standard | 22,551 | $74,703 | 26.0 | -1.3% |
| 52411 | Cedar Rapids | Standard | 8,342 | $170,491 | 17.3 | 15.0% |
| 52233 | Hiawatha | Standard | 7,000 | $65,575 | 4.4 | -0.3% |
| 52314 | Mount Vernon | Standard | 6,200 | $109,244 | 60.6 | 2.6% |
| 52213 | Center Point | Standard | 4,114 | $98,854 | 74.8 | -6.5% |
| 52228 | Fairfax | Standard | 3,802 | $118,125 | 36.1 | 25.3% |
| 52227 | Ely | Standard | 2,996 | $120,230 | 30.2 | 0.3% |
| 52214 | Central City | Standard | 2,761 | $86,786 | 93.3 | -17.7% |
| 52328 | Robins | Standard | 2,712 | $125,347 | 3.3 | -0.3% |
| 52253 | Lisbon | Standard | 2,622 | $104,821 | 48.5 | -7.1% |
| 52336 | Springville | Standard | 2,397 | $91,458 | 49.3 | -1.6% |
| 52324 | Palo | Standard | 2,216 | $115,917 | 50.5 | 21.6% |
| 52401 | Cedar Rapids | Standard | 2,181 | $35,060 | 1.3 | 2.6% |
| 52352 | Walker | Standard | 1,833 | $92,321 | 80.2 | 2.4% |
| 52218 | Coggon | Standard | 1,413 | $82,344 | 70.2 | -24.2% |
| 52341 | Toddville | Standard | 1,378 | $91,250 | 13.4 | 12.1% |
| 52202 | Alburnett | Standard | 1,269 | $105,362 | 26.9 | 33.7% |
| 52219 | Prairieburg | Standard | 143 | $45,000 | 0.4 | -28.1% |
| 52344 | Troy Mills | PO Box | 67 | — | 0.0 | — |
| 52408 | Cedar Rapids | PO Box | — | — | 0.0 | — |
| 52409 | Cedar Rapids | PO Box | — | — | 0.0 | — |
| 52498 | Cedar Rapids | Unique | — | — | 0.2 | — |
| 52410 | Cedar Rapids | PO Box | — | — | 0.0 | — |
| 52499 | Cedar Rapids | Unique | — | — | 0.0 | — |
| 52406 | Cedar Rapids | PO Box | — | — | 0.0 | — |
| 52407 | Cedar Rapids | PO Box | — | — | 0.0 | — |
| 52497 | Cedar Rapids | Unique | — | — | 0.0 | — |