ZIP code · Colp · Illinois · United States

ZIP code 62921 — Colp

ZIP code 62921 serves Colp, Illinois.

Postal code: 62921
Single source Value from one source, not cross-checked.
City: Colp
County: Williamson FIPS 17199
State: Illinois
Country: United States
Coordinates: 37.8053, -89.0801 — precision precise (locality)
View on OpenStreetMap
Population: 200 (ZCTA, ACS 5-year)
Population density: 373 / sq mi
Land area: 0.5 sq mi (1.4 km²) (ZCTA, ACS 5-year)
Median household income: $36,250
Per-capita income: $24,383
Median age: 42.7
Households: 100
Housing units: 142
Median home value: $75,000
Congressional district: IL-12 (119th Congress)
USDA hardiness zone: 7a (0 to 5 °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: 618 (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.

Tools: compare 62921 with another ZIP · ZIPs within 25 miles · distance from 62921

Climate — monthly normals

Warmest month Jul (avg high 88°F), coldest Jan (avg low 23°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	41	46	56	68	77	85	88	87	81	70	56	45
Avg low °F	23	26	35	44	55	64	68	65	56	44	35	27
Precip in	3.4	3.1	4.5	5.5	5.2	4.6	4.1	3.2	3.4	3.7	4.5	3.7

NOAA 1991–2020 climate normals from the nearest station: CARBONDALE SEWAGE PLT (7.0 mi) · NOAA NCEI

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

Map of ZIP code 62921

Climate — monthly normals

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