ZIP code · Chesterfield · Illinois · United States

ZIP code 62630 — Chesterfield

ZIP code 62630 serves Chesterfield, Illinois.

Postal code: 62630
Single source Value from one source, not cross-checked.
City: Chesterfield
County: Macoupin FIPS 17117
State: Illinois
Country: United States
Coordinates: 39.2608, -90.0784 — precision precise (locality)
View on OpenStreetMap
Population: 783 (ZCTA, ACS 5-year)
Population density: 19 / sq mi
Land area: 40.6 sq mi (105.1 km²) (ZCTA, ACS 5-year)
Median household income: $82,292
Per-capita income: $42,504
Median age: 44.5
Households: 298
Housing units: 337
Median home value: $123,300
Congressional districts: IL-13 (also IL-15) (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/Chicago (UTC−6 / UTC−5 DST)
Area code: 618
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 62630 with another ZIP · ZIPs within 25 miles · distance from 62630

Climate — monthly normals

Warmest month Jul (avg high 86°F), coldest Jan (avg low 19°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	36	41	52	65	74	83	86	85	79	67	53	41
Avg low °F	19	23	32	43	54	63	66	64	55	44	33	25
Precip in	2.3	2.1	2.9	4.7	4.3	4.6	3.4	3.2	3.3	3.3	3.5	2.3

NOAA 1991–2020 climate normals from the nearest station: CARLINVILLE (11.3 mi) · NOAA NCEI

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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 62630

Climate — monthly normals

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