ZIP code · Maineville · Ohio · United States

ZIP code 45039 — Maineville

ZIP code 45039 serves Maineville, Ohio.

Postal code
45039
Single source Value from one source, not cross-checked.
City
Maineville
County
Warren FIPS 39165
State
Ohio
Country
United States
Coordinates
39.3170, -84.2438 — precision precise (locality)
View on OpenStreetMap
Population
28,958 (ZCTA, ACS 5-year)
Population density
1,862 / sq mi
Land area
15.6 sq mi (40.3 km²) (ZCTA, ACS 5-year)
Median household income
$111,774
Per-capita income
$52,789
Median age
40.1
Households
11,174
Housing units
11,616
Median home value
$294,100
Median gross rent
$1,554 / month
Congressional district
OH-1 (119th Congress)
USDA hardiness zone
6b (-5 to 0 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
513, 283 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 87°F), coldest Jan (avg low 22°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F394354667684878680685543
Avg low °F222431415161646354423326

NOAA 1991–2020 climate normals from the nearest station: MILFORD (9.6 mi) · NOAA NCEI

Places in ZIP 45039

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page