| ZIP Codes: | 19 ZIP Codes (16 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Code: | 517 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:32 PM |
| Population: | 159,537 [See All] |
| FIPS: | 26075 |
| CBSA: | Jackson, MI |
| Land Area: | 711 sq mi |
| Water Area: | 24 sq mi |
| Coordinates: | 42.2355, -84.4034 |
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159,537 residents live across 19 ZIPs covering 711 sq mi, served by 16 distinct USPS-recognized cities.
Population moved from 159,324 to 159,537 from 2014 to 2024 — a +0.1% change. 7 ZIPs gained residents, 11 lost.
The county's wealthiest ZIP 49234 (Clarklake, $110,313 median) and poorest ZIP 49202 (Jackson, $42,632) are 10.4 miles apart — a 2.6× income gap across local geography.
Median home values vary 2.6× across this county — from $116,100 in 49202 (Jackson) to $298,700 in 49240 (Grass Lake).
Density varies 34× across the county — from 47 people/sq mi in 49284 (Springport) to 1,575 in 49202 (Jackson).
Educational attainment ranges from 15.6% bachelor's+ in 49237 (Concord) to 33.9% in 49283 (Spring Arbor) — the breadth of educational profiles across the area.
Within Michigan, this is the #16 most populous of 83 counties and ranks #16 for median household income .
Weighted by population, the typical household earns about $70,634 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.5% of adults age 25+ hold a bachelor's degree or higher (26,518 of 112,749 reporting).
16 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 49201 | Jackson | Standard | 49,107 | $74,484 | 163.3 | 9.5% |
| 49203 | Jackson | Standard | 36,474 | $56,201 | 26.8 | -3.1% |
| 49202 | Jackson | Standard | 18,519 | $42,632 | 11.8 | -10.4% |
| 49230 | Brooklyn | Standard | 10,077 | $83,458 | 70.1 | -1.9% |
| 49240 | Grass Lake | Standard | 8,863 | $99,681 | 108.2 | -5.4% |
| 49269 | Parma | Standard | 5,544 | $86,699 | 53.6 | -9.8% |
| 49283 | Spring Arbor | Standard | 5,039 | $108,464 | 14.8 | 15.7% |
| 49254 | Michigan Center | Standard | 3,484 | $63,750 | 3.3 | 12.7% |
| 49246 | Horton | Standard | 3,382 | $81,908 | 36.5 | 1.4% |
| 49237 | Concord | Standard | 3,097 | $66,956 | 40.2 | 5.4% |
| 49277 | Rives Junction | Standard | 2,924 | $91,912 | 33.6 | -14.9% |
| 49272 | Pleasant Lake | Standard | 2,883 | $84,107 | 12.5 | 26.0% |
| 49259 | Munith | Standard | 2,653 | $66,500 | 28.0 | 14.9% |
| 49234 | Clarklake | Standard | 2,520 | $110,313 | 23.5 | -10.4% |
| 49284 | Springport | Standard | 2,493 | $57,500 | 53.6 | -15.3% |
| 49241 | Hanover | Standard | 2,279 | $81,742 | 30.7 | -8.9% |
| 49261 | Napoleon | PO Box | 199 | $91,875 | 0.4 | -41.5% |
| 49263 | Norvell | PO Box | 0 | — | 0.0 | -100.0% |
| 49204 | Jackson | PO Box | — | — | 0.0 | — |