Mercer County, IL ZIP Codes
13 ZIP codes cover all or part of Mercer County, Illinois. The Census Bureau counts 15,495 residents in the county, with a median household income of $74,182 and a median home value of $146,700. Median household income ranges from $56,875 in 61465 to $102,639 in 61281. Its largest communities include Aledo, Viola, Alexis, Windsor (Mercer County) and Sherrard.
Mercer County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 15,495 |
| Households | 6,565 |
| Median household income | $74,182 |
| Median home value | $146,700 |
| Median age | 44.7 |
| Median rent | $786 |
All 13 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 16,648 |
| Households (sum of ZIP codes) | 7,045 |
| Median household income, range across ZIP codes | $56,875 (61465) to $102,639 (61281) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $77,248 |
| Homeowners | 83.3% |
| Households with kids under 18 | 28.6% |
| Moved in the past year | 7.7% |
| Carrier routes in EDDM2GO's route library | 11 routes, 2,210 homes (7 of 13 ZIP codes) |
Top facts
- Highest median household income in Mercer County: 61281 ($102,639)
- Most residents: 61231 (4,962 people)
- Highest homeownership: 61281 (92.4% own their home)
- Most households with kids: 61279 (37.3% of households)
- Most new movers: 61412 (15.3% moved in last year)
- Youngest median age: 61272 (41.1 years)
- Highest median home value: 61281 ($224,000)
Every ZIP code in Mercer County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 61231 | Aledo | 4,962 | 2,128 | $70,991 | $147,600 | 72.2% | 29.4% | 6.2% | — | — | 100% of its land |
| 61281 | Sherrard | 2,520 | 965 | $102,639 | $224,000 | 92.4% | 26.2% | 6.5% | — | — | 83% of its land |
| 61272 | New Boston | 1,437 | 586 | $64,167 | $145,900 | 84.8% | 32.4% | 7.9% | 3 | 677 | 97% of its land |
| 61412 | Alexis | 1,392 | 558 | $82,143 | $117,600 | 87.5% | 30.6% | 15.3% | 2 | 455 | 55% of its land |
| 61486 | Viola | 1,330 | 572 | $78,889 | $134,800 | 90.2% | 30.2% | 5.9% | 1 | 449 | 100% of its land |
| 61465 | New Windsor | 1,192 | 546 | $56,875 | $127,400 | 90.3% | 18.3% | 7.5% | — | — | 84% of its land |
| 61279 | Reynolds | 1,015 | 378 | $87,656 | $161,500 | 87.8% | 37.3% | 12.1% | — | — | 53% of its land |
| 61260 | Joy | 737 | 371 | $41,645 | $96,700 | 73.9% | 25.9% | 9.7% | 2 | 201 | 100% of its land |
| 61263 | Matherville | 657 | 272 | $86,500 | $134,800 | 88.6% | 26.8% | 1.2% | — | — | 100% of its land |
| 61476 | Seaton | 551 | 241 | $88,264 | $122,500 | 93.4% | 44.8% | 3.9% | 1 | 113 | 72% of its land |
| 61442 | Keithsburg | 504 | 274 | $48,750 | $67,200 | 81.4% | 16.1% | 7.6% | 1 | 273 | 79% of its land |
| 61466 | North Henderson | 263 | 120 | $73,462 | $90,000 | 100.0% | 26.7% | 18.7% | 1 | 94 | 100% of its land |
| 61276 | Preemption | 88 | 34 | $87,750 | $89,000 | 100.0% | 23.5% | 0.0% | — | — | 100% of its land |
A ZIP code is listed for Mercer County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Aledo — 3,668 residents · 1 ZIP code
- Viola — 899 residents · 1 ZIP code
- Alexis — 814 residents · 1 ZIP code
- Windsor (Mercer County) — 704 residents · 1 ZIP code
- Sherrard — 691 residents · 1 ZIP code
- Matherville — 657 residents · 1 ZIP code
- New Boston — 648 residents · 1 ZIP code
- Reynolds — 584 residents · 2 ZIP codes
- Keithsburg — 490 residents · 1 ZIP code
- Joy — 387 residents · 1 ZIP code
- Seaton — 228 residents · 1 ZIP code
- North Henderson — 191 residents · 1 ZIP code
- Preemption — 127 residents · 3 ZIP codes
- Cable — 122 residents · 1 ZIP code
- Millersburg — 33 residents · 2 ZIP codes
- Buffalo Prairie — 9 residents · 2 ZIP codes
- Eliza — 0 residents · 1 ZIP code
- Hamlet — 0 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Mercer County — 7 ZIP codes ranked
- ZIP codes with the highest home values in Mercer County — 7 ZIP codes ranked
- ZIP codes with the highest homeownership in Mercer County — 7 ZIP codes ranked
- ZIP codes with the most families with kids in Mercer County — 7 ZIP codes ranked
- ZIP codes with the most new movers in Mercer County — 7 ZIP codes ranked
- Youngest ZIP codes in Mercer County — 7 ZIP codes ranked
- Oldest ZIP codes in Mercer County — 7 ZIP codes ranked
- Fastest-growing ZIP codes in Mercer County — 6 ZIP codes ranked
Price a mailing to Mercer County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Mercer County, IL?
- 61231, 61281, 61272, 61412, 61486, 61465, 61279, 61260, 61263, 61476, 61442, 61466 and 61276. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Mercer County?
- 15,495 residents in 6,565 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Mercer County?
- $74,182 for the county as a whole. Its ZIP codes range from $56,875 (61465) to $102,639 (61281).
- Which Mercer County ZIP code has the highest median household income?
- 61281, at $102,639, among ZIP codes with at least 1,000 residents. See the full ranking of Mercer County ZIP codes by income.
- How many carrier routes and mailboxes are in Mercer County?
- For the 7 of 13 ZIP codes in EDDM2GO's stored route library: 11 carrier routes reaching 2,210 residential and 51 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.