| ZIP Codes: | 14 ZIP Codes (11 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 419 / 567 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:18 PM |
| Population: | 108,577 [See All] |
| FIPS: | 39003 |
| CBSA: | Lima, OH |
| Land Area: | 494 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 40.7752, -84.1010 |
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108,577 residents live across 14 ZIPs covering 494 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 112,806 to 108,577 from 2014 to 2024 — a -3.7% change. 6 ZIPs gained residents, 7 lost.
The county's wealthiest ZIP 45850 (Harrod, $84,886 median) and poorest ZIP 45804 (Lima, $44,911) are 6.9 miles apart — a 1.9× income gap across local geography.
Median home values vary 2.1× across this county — from $99,600 in 45804 (Lima) to $212,400 in 45806 (Lima).
Density varies 39× across the county — from 56 people/sq mi in 45850 (Harrod) to 2,207 in 45820 (Cairo).
Educational attainment ranges from 10.7% bachelor's+ in 45804 (Lima) to 38.0% in 45817 (Bluffton) — the breadth of educational profiles across the area.
Within Ohio, this is the #26 most populous of 88 counties and ranks #52 for median household income .
Weighted by population, the typical household earns about $64,643 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.6% of adults age 25+ hold a bachelor's degree or higher (14,420 of 73,439 reporting). The most-educated ZIPs cluster around Lima.
11 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 |
|---|---|---|---|---|---|---|
| 45805 | Lima | Standard | 24,387 | $68,842 | 15.4 | 4.0% |
| 45801 | Lima | Standard | 21,739 | $51,731 | 47.1 | -12.6% |
| 45804 | Lima | Standard | 13,608 | $44,911 | 25.2 | -12.0% |
| 45807 | Lima | Standard | 11,774 | $70,725 | 82.1 | 3.0% |
| 45806 | Lima | Standard | 10,974 | $82,587 | 57.2 | 0.5% |
| 45833 | Delphos | Standard | 10,919 | $65,000 | 68.2 | 3.3% |
| 45817 | Bluffton | Standard | 5,926 | $76,848 | 63.7 | -11.6% |
| 45887 | Spencerville | Standard | 4,422 | $68,409 | 70.3 | 0.1% |
| 45850 | Harrod | Standard | 3,559 | $84,886 | 63.6 | -0.2% |
| 45820 | Cairo | PO Box | 581 | $83,125 | 0.3 | 23.6% |
| 45808 | Beaverdam | Standard | 350 | $81,875 | 0.5 | -1.7% |
| 45854 | Lafayette | PO Box | 293 | $53,125 | 0.3 | -42.5% |
| 45809 | Gomer | Standard | 45 | — | 0.3 | -55.9% |
| 45802 | Lima | PO Box | — | — | 0.0 | — |