ZIP code 61231
Where is ZIP code 61231?
Aledo, Illinois
Mercer County · Standard ZIP code
ZIP code 61231 belongs to Aledo, Illinois in Mercer County. 61231 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Central Time zone and uses area code 309. About 4,962 people live in the 61231 area, where the median household income is $70,991. The closest ZIP codes are 61260 (Joy, 6 mi west), 61486 (Viola, 7.7 mi east) and 61263 (Matherville, 7.8 mi northeast).
| ZIP code | 61231 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Aledo |
| State | Illinois (IL) |
| County | Mercer County |
| Time zone | Central Time · now |
| Area code | 309 |
| Coordinates | 41.2008, -90.7416 map |
| 3-digit prefix | 612 |
Population and income in 61231
| Population | 4,962 · higher than 66% of Illinois ZIP codes |
|---|---|
| People per square mile | 32 · lower than 62% of Illinois ZIP codes |
| Median age | 42.2 years · higher than 51% of Illinois ZIP codes |
| Men / women | 49% / 51% |
| Median household income | $70,991 · lower than 57% of Illinois ZIP codes |
| Income per person | $35,849 |
| Below the poverty line | 12% |
| Bachelor’s degree or higher | 25% of adults 25+ |
| Median home value | $147,600 · lower than 54% of Illinois ZIP codes |
| Median rent | $815 a month |
| Housing units | 2,317 |
| Households | 2,128 (2.25 people on average) |
| Owners / renters | 72% / 28% |
| Land area | 153.48 sq mi (plus 0.08 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 61231. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 61231
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 61260 | Joy, IL | 6 mi W | Standard |
| 61486 | Viola, IL | 7.7 mi E | Standard |
| 61263 | Matherville, IL | 7.8 mi NE | PO Box only |
| 61476 | Seaton, IL | 9.8 mi SW | Standard |
| 61279 | Reynolds, IL | 10.3 mi NE | Standard |
| 61276 | Preemption, IL | 10.6 mi NE | PO Box only |
| 61237 | Buffalo Prairie, IL | 11 mi NW | PO Box only |
| 61442 | Keithsburg, IL | 11.7 mi SW | Standard |
| 61284 | Taylor Ridge, IL | 12.6 mi N | Standard |
| 61453 | Little York, IL | 12.8 mi S | Standard |
| 61272 | New Boston, IL | 12.8 mi W | Standard |
| 61412 | Alexis, IL | 14.6 mi SE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 61231 or measure the distance to another ZIP code.
How to address mail to 61231
123 MAIN ST
ALEDO IL 61231
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Hamlet, Mercer, Ohio Grove, Old Gilchrist and Shale City and other local names: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (61231-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 61231?
- 61231 is a Aledo, Illinois ZIP code.
- What county is 61231 in?
- ZIP code 61231 is in Mercer County, Illinois.
- What time zone is ZIP code 61231 in?
- 61231 is in the Central Time zone (America/Chicago).
- What area code is 61231?
- Phone numbers in ZIP code 61231 use area code 309.
- What is the population of ZIP code 61231?
- About 4,962 people live in ZIP code 61231, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 61231?
- The median household income in 61231 is $70,991 a year, lower than 57% of Illinois ZIP codes.
- What ZIP codes are near 61231?
- The nearest ZIP codes to 61231 are 61260 (Joy, 6 miles), 61486 (Viola, 7.7 miles), 61263 (Matherville, 7.8 miles) and 61476 (Seaton, 9.8 miles).