County ZIP codes · Illinois · FIPS 17135
Montgomery County, IL ZIP Codes
Montgomery County, Illinois has 28 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 16 of the residential ones lie mainly in Montgomery County and 12 mainly in a neighboring county; 20 cross the county line. Median household income ranges from $51,389 in 62557 (Pana) to $89,821 in 62546 (Morrisonville) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Montgomery County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $59,764 and $80,781.
They carry 28 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 28 residential ZIP codes in Montgomery County
16 ZIP codes lie mainly in Montgomery County; 12 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 62056 | Litchfield | 8,528 | 79 | $63k | $127k | 72% |
| 62049 | Hillsboro | 7,871 | 96 | $55k | $128k | 100% |
| 62075 | Nokomis | 3,330 | 31 | $66k | $93k | 81% |
| 62560 | Raymond | 1,446 | 22 | $81k | $110k | 89% |
| 62017 | Coffeen | 1,127 | 32 | $98k | $119k | 94% |
| 62094 | Witt | 1,107 | 35 | $61k | $73k | 100% |
| 62533 | Farmersville | 908 | 19 | $77k | $129k | 100% |
| 62051 | Irving | 791 | 20 | $64k | $181k | 100% |
| 62032 | Fillmore | 765 | 16 | $61k | $68k | 97% |
| 62089 | Taylor Springs | 487 | 215 | $46k | $68k | 100% |
| 62015 | Butler | 423 | 12 | $52k | $122k | 100% |
| 62077 | Panama | 420 | 170 | $73k | $55k | 55% |
| 62572 | Waggoner | 420 | 10 | $93k | $208k | 51% |
| 62538 | Harvel | 342 | 10 | $86k | $87k | 81% |
| 62091 | Walshville | 339 | 11 | $102k | $113k | 100% |
| 62076 | Ohlman | 59 | 32 | $46k | $46k | 100% |
Partly in Montgomery County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 62083 | Rosamond | 145 | 7 | $22k | $213k | 38% |
| 62019 | Donnellson | 314 | 11 | $57k | $117k | 34% |
| 62690 | Virden | 3,838 | 68 | $84k | $118k | 21% |
| 62086 | Sorento | 1,318 | 27 | $65k | $111k | 21% |
| 62553 | Oconee | 318 | 9 | $92k | $112k | 20% |
| 62546 | Morrisonville | 1,521 | 13 | $90k | $119k | 11% |
| 62558 | Pawnee | 3,639 | 39 | $81k | $173k | 9% |
| 62557 | Pana | 6,878 | 59 | $51k | $89k | 5% |
| 62080 | Ramsey | 3,255 | 27 | $68k | $94k | 4% |
| 62074 | New Douglas | 1,205 | 28 | $80k | $261k | 4% |
| 62640 | Girard | 3,391 | 45 | $66k | $172k | 3% |
| 62069 | Mount Olive | 2,897 | 99 | $60k | $103k | 3% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
20 ZIP codes of Montgomery County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Montgomery | Elsewhere |
|---|---|---|
| 62056 | 72% | Macoupin County 28% |
| 62557 | 5% | Christian County 74%; Shelby County 21% |
| 62690 | 21% | Macoupin County 63%; Sangamon County 16% |
| 62558 | 9% | Sangamon County 53%; Christian County 38% |
| 62640 | 3% | Macoupin County 97% |
| 62075 | 81% | Christian County 18% |
| 62080 | 4% | Fayette County 94%; Shelby County 2% |
| 62069 | 3% | Macoupin County 97% |
| 62546 | 11% | Christian County 89% |
| 62560 | 89% | Macoupin County 11% |
| 62086 | 21% | Bond County 76%; Madison County 3% |
| 62074 | 4% | Madison County 75%; Bond County 13%; Macoupin County 8% |
| 62017 | 94% | Bond County 6% |
| 62032 | 97% | Fayette County 3% |
| 62077 | 55% | Bond County 45% |
| 62572 | 51% | Macoupin County 49% |
| 62538 | 81% | Christian County 19% |
| 62553 | 20% | Shelby County 81% |
| 62019 | 34% | Bond County 66% |
| 62083 | 38% | Christian County 62% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Montgomery County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Montgomery County's ZIP codes use 3 prefixes: 620, 625 and 626.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 620 | St Louis, MO (SCF 630) | 18 | 78 |
| 625 | Springfield, IL (SCF 625) | 8 | 53 |
| 626 | Springfield, IL (SCF 625) | 2 | 62 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.