| ZIP Codes: | 54 ZIP Codes (24 Standard, 6 PO Box, 24 Unique) [See All] |
| Area Codes: | 217 / 447 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:03 PM |
| Population: | 194,839 [See All] |
| FIPS: | 17167 |
| CBSA: | Springfield, IL |
| Land Area: | 919 sq mi |
| Water Area: | 12 sq mi |
| Coordinates: | 39.7751, -89.6383 |
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194,839 residents live across 54 ZIPs covering 919 sq mi, served by 20 distinct USPS-recognized cities.
Population moved from 199,115 to 194,839 from 2014 to 2024 — a -2.1% change. 12 ZIPs gained residents, 13 lost.
The county's wealthiest ZIP 62625 (Cantrall, $167,674 median) and poorest ZIP 62701 (Springfield, $32,195) are 7.9 miles apart — a 5.2× income gap across local geography.
Median home values vary 3.3× across this county — from $96,500 in 62703 (Springfield) to $316,800 in 62711 (Springfield).
Density varies 146× across the county — from 25 people/sq mi in 62677 (Pleasant Plains) to 3,650 in 62704 (Springfield).
Educational attainment ranges from 18.8% bachelor's+ in 62702 (Springfield) to 59.0% in 62711 (Springfield) — the breadth of educational profiles across the area.
Within Illinois, this is the #11 most populous of 102 counties and ranks #13 for median household income .
Hosts 4 single-entity Unique ZIPs: 62764Dept Of Transportation ; 62716Springfield ; 62722Secy Of State Vehicle Svcs ; and 62769St Johns Hospital .
Weighted by population, the typical household earns about $80,354 across the county — reflecting what a typical resident sees, not a simple ZIP average.
36.7% of adults age 25+ hold a bachelor's degree or higher (50,140 of 136,611 reporting). The most-educated ZIPs cluster around Springfield.
24 Standard delivery, 6 PO Box only, 24 single-entity Unique ZIPs serve this county.
24 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 5.2× 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 |
|---|---|---|---|---|---|---|
| 62704 | Springfield | Standard | 40,046 | $69,976 | 11.0 | -0.3% |
| 62702 | Springfield | Standard | 31,033 | $51,136 | 16.3 | -13.6% |
| 62703 | Springfield | Standard | 28,922 | $45,009 | 15.3 | -6.1% |
| 62711 | Springfield | Standard | 18,559 | $124,816 | 29.9 | 11.4% |
| 62629 | Chatham | Standard | 15,413 | $107,250 | 37.9 | 14.7% |
| 62712 | Springfield | Standard | 10,045 | $110,179 | 26.3 | -0.5% |
| 62707 | Springfield | Standard | 7,472 | $89,926 | 41.1 | 1.3% |
| 62563 | Rochester | Standard | 5,766 | $117,255 | 58.3 | -2.7% |
| 62684 | Sherman | Standard | 5,760 | $139,196 | 27.8 | 0.0% |
| 62615 | Auburn | Standard | 5,198 | $84,632 | 51.5 | -7.8% |
| 62561 | Riverton | Standard | 4,842 | $81,646 | 23.1 | -8.1% |
| 62558 | Pawnee | Standard | 3,639 | $81,106 | 92.9 | 1.8% |
| 62670 | New Berlin | Standard | 2,682 | $78,750 | 96.8 | -21.5% |
| 62677 | Pleasant Plains | Standard | 2,149 | $102,917 | 85.9 | -13.4% |
| 62693 | Williamsville | Standard | 1,677 | $121,429 | 44.3 | -4.4% |
| 62520 | Dawson | Standard | 1,652 | $84,500 | 27.0 | 21.7% |
| 62530 | Divernon | Standard | 1,558 | $82,188 | 26.7 | 0.5% |
| 62539 | Illiopolis | Standard | 1,412 | $82,750 | 48.9 | -1.8% |
| 62661 | Loami | Standard | 1,212 | $80,833 | 37.2 | -3.7% |
| 62701 | Springfield | Standard | 1,205 | $32,195 | 0.3 | 15.3% |
| 62545 | Mechanicsburg | Standard | 1,101 | $84,815 | 27.5 | 22.3% |
| 62536 | Glenarm | Standard | 1,049 | $95,809 | 9.3 | 2.8% |
| 62625 | Cantrall | Standard | 1,003 | $167,674 | 22.3 | 45.8% |
| 62515 | Buffalo | Standard | 902 | $62,222 | 60.6 | -18.1% |
| 62689 | Thayer | PO Box | 542 | $61,500 | 0.7 | 18.3% |
| 62706 | Springfield | Unique | 0 | — | 0.0 | — |
| 62716 | Springfield | Unique | — | — | 0.1 | — |
| 62723 | Springfield | Unique | — | — | 0.0 | — |
| 62662 | Lowder | PO Box | — | — | 0.0 | — |
| 62786 | Springfield | Unique | — | — | 0.0 | — |
| 62777 | Springfield | Unique | — | — | 0.0 | — |
| 62715 | Springfield | Unique | — | — | 0.0 | — |
| 62761 | Springfield | Unique | — | — | 0.0 | — |
| 62769 | Springfield | Unique | — | — | 0.0 | — |
| 62781 | Springfield | Unique | — | — | 0.0 | — |
| 62766 | Springfield | Unique | — | — | 0.0 | — |
| 62764 | Springfield | Unique | — | — | 0.2 | — |
| 62762 | Springfield | Unique | — | — | 0.0 | — |
| 62763 | Springfield | Unique | — | — | 0.0 | — |
| 62791 | Springfield | PO Box | — | — | 0.0 | — |
| 62708 | Springfield | PO Box | — | — | 0.0 | — |
| 62726 | Springfield | Unique | — | — | 0.0 | — |
| 62719 | Springfield | Unique | — | — | 0.0 | — |
| 62736 | Springfield | Unique | — | — | 0.0 | — |
| 62776 | Springfield | Unique | — | — | 0.0 | — |
| 62796 | Springfield | Unique | — | — | 0.0 | — |
| 62756 | Springfield | Unique | — | — | 0.0 | — |
| 62765 | Springfield | Unique | — | — | 0.0 | — |
| 62722 | Springfield | Unique | — | — | 0.0 | — |
| 62757 | Springfield | Unique | — | — | 0.0 | — |
| 62705 | Springfield | PO Box | — | — | 0.0 | — |
| 62794 | Springfield | PO Box | — | — | 0.0 | — |
| 62739 | Springfield | Unique | — | — | 0.0 | — |
| 62767 | Springfield | Unique | — | — | 0.0 | — |