ZIP code · Uniopolis · Ohio · United States

ZIP code 45888 — Uniopolis

ZIP code 45888 serves Uniopolis, Ohio.

Postal code
45888
Single source Value from one source, not cross-checked.
City
Uniopolis
County
Auglaize FIPS 39011
State
Ohio
Country
United States
Coordinates
40.6023, -84.0860 — precision precise (locality)
View on OpenStreetMap
Population
237 (ZCTA, ACS 5-year)
Population density
890 / sq mi
Land area
0.3 sq mi (0.7 km²) (ZCTA, ACS 5-year)
Median household income
$67,500
Per-capita income
$40,213
Median age
59.3
Households
130
Housing units
130
Median home value
$89,200
Congressional district
OH-4 (119th Congress)
USDA hardiness zone
6a (-10 to -5 °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
419, 567 (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 84°F), coldest Jan (avg low 20°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F343848617281848276645039
Avg low °F202230405161636154443426
Precip in2.21.92.53.63.84.03.73.52.92.72.82.3

NOAA 1991–2020 climate normals from the nearest station: LIMA ALLEN CO AP (8.0 mi) · NOAA NCEI

Places in ZIP 45888

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