| ZIP Codes: | 24 ZIP Codes (14 Standard, 10 PO Box, 0 Unique) [See All] |
| Area Code: | 207 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:29 PM |
| Population: | 113,423 [See All] |
| FIPS: | 23001 |
| CBSA: | Lewiston-Auburn, ME |
| Land Area: | 497 sq mi |
| Water Area: | 29 sq mi |
| Coordinates: | 44.1513, -70.2295 |
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113,423 residents live across 24 ZIPs covering 497 sq mi, served by 20 distinct USPS-recognized cities.
Population moved from 107,390 to 113,423 from 2014 to 2024 — a +5.6% change. 13 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 04282 (Turner, $100,036 median) and poorest ZIP 04254 (Livermore Falls, $45,843) are 11.9 miles apart — a 2.2× income gap across local geography.
Median home values vary 2.2× across this county — from $147,500 in 04254 (Livermore Falls) to $322,200 in 04222 (Durham).
Density varies 23× across the county — from 47 people/sq mi in 04253 (Livermore) to 1,085 in 04240 (Lewiston).
Educational attainment ranges from 15.6% bachelor's+ in 04256 (Mechanic Falls) to 34.8% in 04222 (Durham) — the breadth of educational profiles across the area.
Within Maine, this is the #5 most populous of 16 counties and ranks #7 for median household income with the #4 fastest decade growth .
Weighted by population, the typical household earns about $69,462 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.4% of adults age 25+ hold a bachelor's degree or higher (18,415 of 78,846 reporting).
14 Standard delivery, 10 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 04240 | Lewiston | Standard | 38,324 | $55,393 | 35.3 | 5.3% |
| 04210 | Auburn | Standard | 24,602 | $66,647 | 65.8 | 7.2% |
| 04280 | Sabattus | Standard | 7,040 | $62,455 | 43.7 | 1.6% |
| 04274 | Poland | Standard | 5,954 | $85,557 | 47.1 | 9.1% |
| 04282 | Turner | Standard | 5,891 | $100,036 | 62.7 | 2.7% |
| 04252 | Lisbon Falls | Standard | 4,968 | $73,476 | 11.3 | 3.7% |
| 04250 | Lisbon | Standard | 4,782 | $84,028 | 12.5 | 15.3% |
| 04236 | Greene | Standard | 4,417 | $98,093 | 35.1 | 1.6% |
| 04222 | Durham | Standard | 4,262 | $99,181 | 39.1 | 9.9% |
| 04256 | Mechanic Falls | Standard | 3,134 | $69,914 | 11.2 | 5.2% |
| 04254 | Livermore Falls | Standard | 3,102 | $45,843 | 20.3 | 0.6% |
| 04258 | Minot | Standard | 2,794 | $95,655 | 29.7 | 7.0% |
| 04263 | Leeds | Standard | 2,285 | $85,208 | 43.4 | 13.7% |
| 04253 | Livermore | Standard | 1,868 | $70,441 | 39.5 | -9.1% |
| 04228 | East Livermore | PO Box | — | — | 0.0 | — |
| 04266 | North Turner | PO Box | — | — | 0.0 | — |
| 04288 | West Minot | PO Box | — | — | 0.0 | — |
| 04243 | Lewiston | PO Box | — | — | 0.0 | — |
| 04212 | Auburn | PO Box | — | — | 0.0 | — |
| 04223 | Danville | PO Box | — | — | 0.0 | — |
| 04291 | West Poland | PO Box | — | — | 0.0 | — |
| 04230 | East Poland | PO Box | — | — | 0.0 | — |
| 04211 | Auburn | PO Box | — | — | 0.0 | — |
| 04241 | Lewiston | PO Box | — | — | 0.0 | — |