ZIP code · Roundhead · Ohio · United States

ZIP code 43346 — Roundhead

ZIP code 43346 serves Roundhead, Ohio.

Postal code
43346
Single source Value from one source, not cross-checked.
City
Roundhead
County
Hardin FIPS 39065
State
Ohio
Country
United States
Coordinates
40.5732, -83.8462 — precision precise (locality)
View on OpenStreetMap
Population
180 (ZCTA, ACS 5-year)
Population density
168 / sq mi
Land area
1.1 sq mi (2.8 km²) (ZCTA, ACS 5-year)
Per-capita income
$12,096
Median age
7.1
Households
30
Housing units
30
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 code
419 (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 18°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F364150637483868579675242
Avg low °F182129395059626154433325
Precip in2.82.32.94.24.54.74.53.63.13.03.22.6

NOAA 1991–2020 climate normals from the nearest station: HUNTSVILLE 3N (6.6 mi) · NOAA NCEI

Places in ZIP 43346

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