| ZIP Codes: | 22 ZIP Codes (16 Standard, 6 PO Box, 0 Unique) [See All] |
| Area Code: | 563 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:12 PM |
| Population: | 174,858 [See All] |
| FIPS: | 19163 |
| CBSA: | Davenport-Moline-Rock Island, IA-IL |
| Land Area: | 470 sq mi |
| Water Area: | 10 sq mi |
| Coordinates: | 41.6012, -90.5990 |
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174,858 residents live across 22 ZIPs covering 470 sq mi, served by 14 distinct USPS-recognized cities.
Population moved from 168,570 to 174,858 from 2014 to 2024 — a +3.7% change. 11 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 52756 (Long Grove, $116,250 median) and poorest ZIP 52801 (Davenport, $31,204) are 14.2 miles apart — a 3.7× income gap across local geography.
Median home values vary 3.8× across this county — from $93,500 in 52802 (Davenport) to $358,000 in 52756 (Long Grove).
Density varies 107× across the county — from 39 people/sq mi in 52773 (Walcott) to 4,181 in 52803 (Davenport).
Educational attainment ranges from 8.6% bachelor's+ in 52802 (Davenport) to 54.6% in 52748 (Eldridge) — the breadth of educational profiles across the area.
Within Iowa, this is the #3 most populous of 99 counties and ranks #18 for median household income .
Weighted by population, the typical household earns about $81,430 across the county — reflecting what a typical resident sees, not a simple ZIP average.
36.7% of adults age 25+ hold a bachelor's degree or higher (43,927 of 119,695 reporting).
16 Standard delivery, 6 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 3.7× 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 |
|---|---|---|---|---|---|---|
| 52722 | Bettendorf | Standard | 41,264 | $101,546 | 29.2 | 15.8% |
| 52806 | Davenport | Standard | 26,871 | $74,297 | 33.0 | -3.5% |
| 52804 | Davenport | Standard | 26,835 | $65,849 | 33.6 | -1.1% |
| 52803 | Davenport | Standard | 22,742 | $64,543 | 5.4 | -2.4% |
| 52807 | Davenport | Standard | 15,617 | $72,579 | 29.3 | 7.4% |
| 52748 | Eldridge | Standard | 9,594 | $107,869 | 38.3 | -0.8% |
| 52802 | Davenport | Standard | 9,466 | $54,380 | 12.1 | -7.3% |
| 52753 | Le Claire | Standard | 6,020 | $103,813 | 27.3 | 14.8% |
| 52726 | Blue Grass | Standard | 5,160 | $104,250 | 32.7 | 3.7% |
| 52773 | Walcott | Standard | 2,389 | $85,523 | 61.2 | 6.7% |
| 52756 | Long Grove | Standard | 1,982 | $116,250 | 43.9 | -4.8% |
| 52801 | Davenport | Standard | 1,788 | $31,204 | 0.5 | 77.7% |
| 52768 | Princeton | Standard | 1,352 | $112,563 | 32.6 | 1.4% |
| 52746 | Donahue | Standard | 1,240 | $107,813 | 27.7 | 28.2% |
| 52728 | Buffalo | PO Box | 984 | $69,239 | 3.1 | -0.2% |
| 52745 | Dixon | Standard | 443 | $68,750 | 27.1 | -21.9% |
| 52765 | New Liberty | Standard | 427 | $107,321 | 30.1 | 0.7% |
| 52767 | Pleasant Valley | PO Box | 386 | — | 1.8 | 94.0% |
| 52758 | Mc Causland | PO Box | 298 | $63,333 | 0.7 | 53.6% |
| 52809 | Davenport | PO Box | — | — | 0.0 | — |
| 52805 | Davenport | PO Box | — | — | 0.0 | — |
| 52808 | Davenport | PO Box | — | — | 0.0 | — |