| ZIP Codes: | 19 ZIP Codes (13 Standard, 6 PO Box, 0 Unique) [See All] |
| Area Codes: | 231 / 616 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:52 PM |
| Population: | 306,896 [See All] |
| FIPS: | 26139 |
| CBSA: | Grand Rapids-Wyoming-Kentwood, MI |
| Land Area: | 621 sq mi |
| Water Area: | 36 sq mi |
| Coordinates: | 42.9427, -86.0048 |
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306,896 residents live across 19 ZIPs covering 621 sq mi, served by 16 distinct USPS-recognized cities.
Population moved from 276,346 to 306,812 from 2014 to 2024 — a +11.0% change. 13 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 49426 (Hudsonville, $112,234 median) and poorest ZIP 49401 (Allendale, $74,880) are 9.7 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.4× across this county — from $278,000 in 49423 (Holland) to $383,800 in 49435 (Marne).
Density varies 33× across the county — from 51 people/sq mi in 49403 (Conklin) to 1,678 in 49428 (Jenison).
Educational attainment ranges from 23.9% bachelor's+ in 49403 (Conklin) to 48.1% in 49456 (Spring Lake) — the breadth of educational profiles across the area.
Within Michigan, this is the #7 most populous of 83 counties and ranks #3 for median household income with the #2 fastest decade growth .
Weighted by population, the typical household earns about $91,006 across the county — reflecting what a typical resident sees, not a simple ZIP average.
39.3% of adults age 25+ hold a bachelor's degree or higher (77,165 of 196,494 reporting).
13 Standard delivery, 6 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 49424 | Holland | Standard | 49,810 | $85,478 | 58.7 | 11.5% |
| 49423 | Holland | Standard | 47,060 | $81,858 | 79.8 | 3.7% |
| 49426 | Hudsonville | Standard | 40,523 | $112,234 | 60.6 | 17.0% |
| 49417 | Grand Haven | Standard | 33,878 | $83,405 | 49.2 | 12.4% |
| 49401 | Allendale | Standard | 29,674 | $74,880 | 32.7 | 45.5% |
| 49464 | Zeeland | Standard | 28,914 | $98,319 | 73.6 | -0.4% |
| 49428 | Jenison | Standard | 28,209 | $100,225 | 16.8 | 6.9% |
| 49456 | Spring Lake | Standard | 19,931 | $92,672 | 29.8 | 5.2% |
| 49404 | Coopersville | Standard | 9,117 | $86,096 | 64.8 | 2.1% |
| 49460 | West Olive | Standard | 8,894 | $101,966 | 52.1 | 4.8% |
| 49448 | Nunica | Standard | 4,374 | $86,458 | 32.6 | 27.6% |
| 49435 | Marne | Standard | 3,831 | $103,432 | 21.7 | 2.0% |
| 49403 | Conklin | Standard | 2,467 | $85,000 | 48.5 | 13.7% |
| 49434 | Macatawa | PO Box | 130 | $178,942 | 0.1 | 1757.1% |
| 49409 | Ferrysburg | PO Box | 70 | — | 0.0 | — |
| 49430 | Lamont | PO Box | 14 | — | 0.0 | — |
| 49422 | Holland | PO Box | — | — | 0.0 | — |
| 49427 | Jamestown | PO Box | — | — | 0.0 | — |
| 49429 | Jenison | PO Box | — | — | 0.0 | — |