| ZIP Codes: | 20 ZIP Codes (10 Standard, 9 PO Box, 1 Unique) [See All] |
| Area Codes: | 220 / 740 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:20 PM |
| Population: | 164,212 [See All] |
| FIPS: | 39089 |
| CBSA: | Columbus, OH |
| Land Area: | 608 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 40.0604, -82.4985 |
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164,212 residents live across 20 ZIPs covering 608 sq mi, served by 18 distinct USPS-recognized cities.
Population moved from 151,729 to 163,741 from 2014 to 2024 — a +7.9% change. 10 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 43023 (Granville, $142,852 median) and poorest ZIP 43055 (Newark, $63,974) are 9.4 miles apart — a 2.2× income gap across local geography.
Median home values vary 2.9× across this county — from $164,200 in 43008 (Buckeye Lake) to $473,100 in 43023 (Granville).
Density varies 19× across the county — from 66 people/sq mi in 43071 (Saint Louisville) to 1,226 in 43008 (Buckeye Lake).
Educational attainment ranges from 14.9% bachelor's+ in 43008 (Buckeye Lake) to 55.5% in 43023 (Granville) — the breadth of educational profiles across the area.
Within Ohio, this is the #19 most populous of 88 counties and ranks #3 for median household income with the #8 fastest decade growth .
Hosts 1 single-entity Unique ZIP: 43093State Farm Insurance .
Weighted by population, the typical household earns about $89,136 across the county — reflecting what a typical resident sees, not a simple ZIP average.
28.9% of adults age 25+ hold a bachelor's degree or higher (32,320 of 111,824 reporting).
10 Standard delivery, 9 PO Box only, 1 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 43055 | Newark | Standard | 63,281 | $63,974 | 112.9 | 5.2% |
| 43062 | Pataskala | Standard | 32,037 | $105,968 | 74.0 | 16.0% |
| 43056 | Heath | Standard | 17,637 | $80,014 | 86.9 | -1.1% |
| 43023 | Granville | Standard | 15,688 | $142,852 | 50.5 | 24.3% |
| 43031 | Johnstown | Standard | 13,876 | $110,930 | 85.4 | 12.0% |
| 43025 | Hebron | Standard | 5,357 | $87,381 | 36.2 | -8.7% |
| 43080 | Utica | Standard | 5,321 | $87,301 | 73.6 | -8.7% |
| 43001 | Alexandria | Standard | 2,892 | $93,804 | 28.3 | 16.8% |
| 43008 | Buckeye Lake | PO Box | 2,434 | $88,558 | 2.0 | 0.2% |
| 43071 | Saint Louisville | Standard | 2,371 | $78,824 | 35.9 | 1.5% |
| 43013 | Croton | Standard | 1,754 | $131,528 | 20.7 | 81.6% |
| 43033 | Kirkersville | PO Box | 387 | $75,833 | 0.4 | -5.6% |
| 43018 | Etna | PO Box | 286 | $110,481 | 0.8 | — |
| 43740 | Gratiot | PO Box | 261 | $66,806 | 0.1 | -49.2% |
| 43030 | Jacksontown | PO Box | 249 | $213,021 | 0.4 | 3.3% |
| 43721 | Brownsville | PO Box | 196 | — | 0.0 | 378.0% |
| 43027 | Homer | PO Box | 185 | — | 0.0 | — |
| 43073 | Summit Station | PO Box | — | — | 0.0 | — |
| 43093 | Newark | Unique | — | — | 0.0 | — |
| 43058 | Newark | PO Box | — | — | 0.0 | — |