Peoria County, Illinois
Peoria County, Illinois | |
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Peoria County Courthouse | |
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Flag Seal | |
Location within the U.S. state of Illinois | |
| Coordinates: 40°47′N 89°46′W / 40.79°N 89.76°W | |
| Country | United States |
| State | Illinois |
| Founded | 1825 |
| Named after | Peoria tribe |
| Seat | Peoria |
| Largest city | Peoria |
| Area | |
• Total | 631 sq mi (1,630 km2) |
| • Land | 619 sq mi (1,600 km2) |
| • Water | 11 sq mi (28 km2) 1.8% |
| Population (2020) | |
• Total | 181,830 |
• Estimate (2024) | 179,630 |
| • Density | 294/sq mi (113/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| ZIP Codes | 61451, 61517, 61523, 61525, 61526, 61528, 61529, 61531, 61533, 61536, 61539, 61547, 61552, 61559, 61562, 61569, 61601, 61602, 61603, 61604, 61605, 61606, 61607, 61612, 61613, 61614, 61615, 61616, 61625, 61629, 61630, 61633, 61634, 61636, 61637, 61638, 61639, 61641, 61643, 61650, 61651, 61652, 61653, 61654, 61655, 61656 |
| Congressional districts | 16th, 17th |
| Website | www |
Peoria County is located in the U.S. state of Illinois. The 2020 United States census listed its population at 181,830. Its county seat is Peoria. Peoria County is part of the Peoria metropolitan area.