Youngest ZIP codes in Peoria County, IL
These are the 20 ZIP codes in Peoria County with the lowest median age, out of 20 with at least 1,000 residents. 61606 (Peoria, 23.4), 61602 (Peoria, 33.3) and 61603 (Peoria, 34.1) lead the list. There is no single "best" ZIP code in Peoria County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.
Youngest ZIP codes in Peoria County
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 61606 | Peoria | 23.4 ±1.4 | 6,684 | 2,544 | 2,442 |
| 2 | 61602 | Peoria | 33.3 ±9.5 | 1,163 | 891 | 974 |
| 3 | 61603 | Peoria | 34.1 ±2.4 | 15,356 | 6,674 | — |
| 4 | 61605 | Peoria | 35.0 ±2.6 | 13,424 | 5,797 | — |
| 5 | 61525 | Dunlap | 35.2 ±1.8 | 12,357 | 4,079 | — |
| 6 | 61533 | Glasford | 35.8 ±9.2 | 2,441 | 916 | — |
| 7 | 61615 | Peoria | 36.1 ±2.0 | 23,523 | 10,897 | — |
| 8 | 61614 | Peoria | 37.2 ±2.2 | 27,370 | 12,824 | 13,548 |
| 9 | 61531 | Farmington | 39.2 ±3.7 | 3,007 | 1,221 | — |
| 10 | 61604 | Peoria | 40.2 ±1.9 | 28,313 | 12,176 | 12,910 |
| 11 | 61616 | Peoria Heights | 41.1 ±2.3 | 5,825 | 2,898 | 3,001 |
| 12 | 61529 | Elmwood | 42.0 ±6.1 | 2,763 | 1,151 | — |
| 13 | 61526 | Edelstein | 42.3 ±5.5 | 1,105 | 382 | 396 |
| 14 | 61528 | Edwards | 43.0 ±3.8 | 3,212 | 1,177 | 1,179 |
| 15 | 61547 | Mapleton | 43.4 ±3.1 | 3,562 | 1,350 | — |
| 16 | 61607 | Peoria | 43.5 ±4.1 | 10,600 | 4,581 | — |
| 17 | 61523 | Chillicothe | 45.4 ±3.5 | 10,203 | 4,635 | — |
| 18 | 61517 | Brimfield | 45.9 ±7.3 | 3,033 | 1,144 | — |
| 19 | 61559 | Princeville | 48.1 ±6.6 | 3,595 | 1,436 | — |
| 20 | 61536 | Hanna City | 52.9 ±5.6 | 3,503 | 1,649 | 1,153 |
How we ranked them
Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 20 of 26 qualify.
Which of these to mail, and why
Younger ZIP codes skew toward renters, students and young families: fitness, quick-service food, apartments, entertainment and first-time-buyer offers.
The top five ZIP codes on this list hold 19,985 households. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 61606 on the EDDM route map
More rankings
- Richest ZIP codes in Peoria County
- ZIP codes with the highest home values in Peoria County
- ZIP codes with the highest homeownership in Peoria County
- ZIP codes with the most families with kids in Peoria County
- ZIP codes with the most new movers in Peoria County
- Oldest ZIP codes in Peoria County
- Fastest-growing ZIP codes in Peoria County
- All Peoria County ZIP codes
Businesses that mail these ZIP codes
Map it and price it
EDDM guides
Frequently asked questions
- Which ZIP code in Peoria County has the lowest median age?
- 61606 (Peoria), at 23.4 (±1.4), among 20 ZIP codes with at least 1,000 residents.
- How is this ranking calculated?
- Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024).
- Why are some ZIP codes missing?
- ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.