Find the last 4 digits (ZIP+4) for an address in 61728

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ZIP Code 61728 – Colfax, IL

Colfax, Illinois · McLean County · Central time

ZIP code61728
CityColfax
StateIllinois
CountyMcLean County
Population1,359
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area69.43 sq mi
Center (lat, long)40.5806, -88.6223

Area codes in this area

861779815

These are the area codes that most often serve ZIP 61728 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

61720 Anchor · 6.6 mi61730 Cooksville · 6.7 mi61731 Cropsey · 7.6 mi61753 Lexington · 9.3 mi61737 Ellsworth · 10.4 mi61722 Arrowsmith · 10.8 mi61770 Saybrook · 11.4 mi61739 Fairbury · 11.5 mi

About ZIP 61728

ZIP code 61728 is assigned to Colfax, Illinois. It lies in McLean County. Its Census area covers about 69.43 square miles of land. The closest neighboring ZIP is 61720 (Anchor), about 6.6 miles away.

Every address in 61728 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources