ZIP code · Radnor · Ohio · United States

ZIP code 43066 — Radnor

ZIP code 43066 serves Radnor, Ohio.

Postal code
43066
Single source Value from one source, not cross-checked.
City
Radnor
County
Delaware FIPS 39041
State
Ohio
Country
United States
Coordinates
40.3918, -83.1781 — precision precise (locality)
View on OpenStreetMap
Population
1,170 (ZCTA, ACS 5-year)
Population density
33 / sq mi
Land area
36 sq mi (93.2 km²) (ZCTA, ACS 5-year)
Median household income
$110,333
Per-capita income
$52,419
Median age
45.5
Households
490
Housing units
504
Median home value
$316,700
Congressional district
OH-4 (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
740
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 85°F), coldest Jan (avg low 21°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F353950637482858478655140
Avg low °F212331415261646255443426
Precip in2.72.33.03.94.54.84.23.43.22.72.92.9

NOAA 1991–2020 climate normals from the nearest station: MARYSVILLE (14.5 mi) · NOAA NCEI

Places in ZIP 43066

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