ZIP code · Miamisburg · Ohio · United States

ZIP code 45342 — Miamisburg

ZIP code 45342 serves Miamisburg, Ohio.

Postal code
45342
Single source Value from one source, not cross-checked.
City
Miamisburg
County
Montgomery FIPS 39113
State
Ohio
Country
United States
Coordinates
39.6321, -84.2675 — precision precise (locality)
View on OpenStreetMap
Population
36,675 (ZCTA, ACS 5-year)
Population density
1,069 / sq mi
Land area
34.3 sq mi (88.9 km²) (ZCTA, ACS 5-year)
Median household income
$83,936
Per-capita income
$41,687
Median age
38.4
Households
14,772
Housing units
15,818
Median home value
$206,800
Median gross rent
$1,247 / month
Congressional districts
OH-10 (also 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 code
937 (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 86°F), coldest Jan (avg low 22°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F394353657583868579675443
Avg low °F222533435362656356453527
Precip in2.92.33.54.44.24.93.62.83.03.03.13.2

NOAA 1991–2020 climate normals from the nearest station: DAYTON WRIGHT BROS AP (3.4 mi) · NOAA NCEI

Places in ZIP 45342

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