ZIP code · Diagonal · Iowa · United States

ZIP code 50845 — Diagonal

ZIP code 50845 serves Diagonal, Iowa.

Postal code
50845
Single source Value from one source, not cross-checked.
City
Diagonal
County
Ringgold FIPS 19159
State
Iowa
Country
United States
Coordinates
40.8226, -94.3552 — precision precise (locality)
View on OpenStreetMap
Population
820 (ZCTA, ACS 5-year)
Population density
7 / sq mi
Land area
111.9 sq mi (289.7 km²) (ZCTA, ACS 5-year)
Median household income
$70,781
Per-capita income
$25,080
Median age
40.6
Households
277
Housing units
314
Median home value
$104,300
Median gross rent
$838 / month
Congressional district
IA-3 (119th Congress)
USDA hardiness zone
5b (-15 to -10 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
641
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 12°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F323749617180858376644937
Avg low °F121628385060646253402818
Precip in0.71.32.23.45.35.44.44.03.72.92.11.6

NOAA 1991–2020 climate normals from the nearest station: MT AYR (10.0 mi) · NOAA NCEI

Places in ZIP 50845

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