Find the last 4 digits (ZIP+4) for an address in 61231

ZIP 61231, Aledo, IL is filled in. Just type the street address.

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ZIP Code 61231 – Aledo, IL

Aledo, Illinois · Mercer County · Central time

ZIP code61231
CityAledo
StateIllinois
CountyMercer County
Population4,962
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area153.48 sq mi
Center (lat, long)41.2107, -90.7178

Area codes in this area

861

These are the area codes that most often serve ZIP 61231 (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

61263 Matherville · 7.4 mi61486 Viola · 7.4 mi61279 Reynolds · 8 mi61260 Joy · 9 mi61476 Seaton · 10.1 mi61276 Preemption · 10.4 mi61412 Alexis · 11.6 mi61237 Buffalo Prairie · 11.7 mi

About ZIP 61231

ZIP code 61231 is assigned to Aledo, Illinois. It lies in Mercer County. Its Census area covers about 153.48 square miles of land. The closest neighboring ZIP is 61263 (Matherville), about 7.4 miles away.

Every address in 61231 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