| ZIP Codes: | 45 ZIP Codes (21 Standard, 12 PO Box, 12 Unique) [See All] |
| Area Codes: | 309 / 861 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:20 PM |
| Population: | 179,934 [See All] |
| FIPS: | 17143 |
| CBSA: | Peoria, IL |
| Land Area: | 650 sq mi |
| Water Area: | 12 sq mi |
| Coordinates: | 40.7297, -89.6505 |
| Quick Link: |
179,934 residents live across 45 ZIPs covering 650 sq mi, served by 17 distinct USPS-recognized cities.
Population moved from 187,443 to 179,934 from 2014 to 2024 — a -4.0% change. 9 ZIPs gained residents, 16 lost.
The county's wealthiest ZIP 61528 (Edwards, $183,140 median) and poorest ZIP 61605 (Peoria, $26,392) are 8.4 miles apart — a 6.9× income gap across local geography.
Median home values vary 6.9× across this county — from $47,400 in 61605 (Peoria) to $329,300 in 61528 (Edwards).
Density varies 198× across the county — from 26 people/sq mi in 61569 (Trivoli) to 5,101 in 61606 (Peoria).
Educational attainment ranges from 4.7% bachelor's+ in 61605 (Peoria) to 70.1% in 61525 (Dunlap) — the breadth of educational profiles across the area.
Within Illinois, this is the #12 most populous of 102 counties and ranks #28 for median household income .
Hosts 4 single-entity Unique ZIPs: 61613Northwoods Shop Ctr ; 61636Methodist Hosp ; 61629Caterpillar Inc ; and 61625Bradley Univ .
Weighted by population, the typical household earns about $72,442 across the county — reflecting what a typical resident sees, not a simple ZIP average.
34.8% of adults age 25+ hold a bachelor's degree or higher (42,210 of 121,199 reporting).
21 Standard delivery, 12 PO Box only, 12 single-entity Unique ZIPs serve this county.
2 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
12 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 6.9× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 61604 | Peoria | Standard | 28,313 | $52,414 | 15.6 | -10.9% |
| 61614 | Peoria | Standard | 27,370 | $66,924 | 11.1 | -4.4% |
| 61615 | Peoria | Standard | 23,523 | $79,817 | 33.1 | 3.6% |
| 61603 | Peoria | Standard | 15,356 | $41,618 | 5.6 | -7.0% |
| 61605 | Peoria | Standard | 13,424 | $26,392 | 3.6 | -15.4% |
| 61525 | Dunlap | Standard | 12,357 | $161,165 | 29.9 | 29.4% |
| 61607 | Peoria | Standard | 10,600 | $75,532 | 27.5 | -7.6% |
| 61523 | Chillicothe | Standard | 10,203 | $79,453 | 58.8 | -9.2% |
| 61606 | Peoria | Standard | 6,684 | $39,196 | 1.3 | -18.5% |
| 61616 | Peoria Heights | Standard | 5,825 | $60,099 | 2.9 | -3.6% |
| 61559 | Princeville | Standard | 3,595 | $101,200 | 99.3 | 10.9% |
| 61547 | Mapleton | Standard | 3,562 | $108,158 | 26.7 | -16.0% |
| 61536 | Hanna City | Standard | 3,503 | $74,249 | 42.2 | 28.6% |
| 61528 | Edwards | Standard | 3,212 | $183,140 | 17.6 | 22.6% |
| 61517 | Brimfield | Standard | 3,033 | $99,886 | 65.8 | -3.4% |
| 61529 | Elmwood | Standard | 2,763 | $91,661 | 66.7 | -2.6% |
| 61533 | Glasford | Standard | 2,441 | $73,051 | 45.2 | 5.5% |
| 61602 | Peoria | Standard | 1,163 | $33,750 | 1.5 | 18.9% |
| 61526 | Edelstein | Standard | 1,105 | $118,393 | 32.4 | -2.9% |
| 61569 | Trivoli | Standard | 938 | $77,083 | 36.3 | 1.4% |
| 61625 | Peoria | Unique | 456 | — | 0.0 | 60.6% |
| 61451 | Laura | Standard | 272 | $44,167 | 23.3 | -47.2% |
| 61539 | Kingston Mines | PO Box | 147 | $51,250 | 0.8 | -31.0% |
| 61552 | Mossville | PO Box | 51 | — | 2.0 | -76.1% |
| 61562 | Rome | PO Box | 38 | — | 0.0 | -29.6% |
| 61638 | Peoria | Unique | — | — | 0.0 | — |
| 61641 | Peoria | Unique | — | — | 0.0 | — |
| 61630 | Peoria | Unique | — | — | 0.0 | — |
| 61634 | Peoria | Unique | — | — | 0.0 | — |
| 61629 | Peoria | Unique | — | — | 0.0 | — |
| 61653 | Peoria | PO Box | — | — | 0.0 | — |
| 61654 | Peoria | PO Box | — | — | 0.0 | — |
| 61651 | Peoria | PO Box | — | — | 0.0 | — |
| 61652 | Peoria | PO Box | — | — | 0.0 | — |
| 61656 | Peoria | PO Box | — | — | 0.0 | — |
| 61655 | Peoria | PO Box | — | — | 0.0 | — |
| 61650 | Peoria | PO Box | — | — | 0.0 | — |
| 61601 | Peoria | PO Box | — | — | 0.0 | — |
| 61636 | Peoria | Unique | — | — | 0.0 | — |
| 61637 | Peoria | Unique | — | — | 0.0 | — |
| 61639 | Peoria | Unique | — | — | 0.0 | — |
| 61612 | Peoria | PO Box | — | — | 0.0 | — |
| 61643 | Peoria | Unique | — | — | 0.0 | — |
| 61633 | Peoria | Unique | — | — | 0.0 | — |
| 61613 | Peoria | Unique | — | — | 0.1 | — |