Jefferson County, Missouri ZIP codes
19 ZIP codes are in Jefferson County, plus 9 that cross in from neighboring counties. It's part of the St. Louis, MO-IL metro area.
- ZIP codes
- 19
- Population in these ZIPs
- 244,915
- Avg. median income
- $85,700population-weighted
- Cities & towns
- 19
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Jefferson County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 63010 | Arnold | 34,478 | $79,784 | $273,000 |
| 63012 | Barnhart | 10,314 | $96,099 | $284,400 |
| 63016 | Cedar Hill | 6,459 | $86,359 | $275,600 |
| 63019 | Crystal City | 4,489 | $72,569 | $227,100 |
| 63020 | De Soto | 20,166 | $70,824 | $244,900 |
| 63023 | Dittmer | 5,002 | $79,583 | $276,100 |
| 63026 | Fenton | 45,354 | $97,553 | $351,600 |
| 63028 | Festus | 28,457 | $79,737 | $303,400 |
| 63047 | Hematite | 0 | — | — |
| 63048 | Herculaneum | 4,228 | $92,109 | $301,300 |
| 63049 | High Ridge | 16,592 | $92,333 | $274,800 |
| 63050 | Hillsboro | 18,744 | $87,371 | $320,000 |
| 63051 | House Springs | 13,436 | $79,940 | $278,700 |
| 63052 | Imperial | 28,712 | $92,922 | $322,700 |
| 63053 | Kimmswick | 56 | $61,250 | $221,300 |
| 63057 PO Box | Liguori | — | — | — |
| 63065 PO Box | Mapaville | — | — | — |
| 63066 PO Box | Morse Mill | — | — | — |
| 63070 | Pevely | 8,428 | $65,211 | $276,900 |
ZIP codes partly in Jefferson County
These ZIP codes are mostly in a neighboring county but cover part of Jefferson County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 63015 | Catawissa | Franklin County | 1,939 | $88,750 | $255,000 |
| 63025 | Eureka | St. Louis County | 19,508 | $125,676 | $423,700 |
| 63030 | Fletcher | Washington County | 557 | $91,042 | $183,300 |
| 63041 | Grubville | Franklin County | 309 | $68,750 | $261,800 |
| 63069 | Pacific | Franklin County | 15,697 | $78,185 | $302,500 |
| 63072 | Robertsville | Franklin County | 3,469 | $80,333 | $236,900 |
| 63087 | Valles Mines | St. Francois County | 1,066 | $60,313 | $282,400 |
| 63627 | Bloomsdale | Ste. Genevieve County | 2,787 | $88,071 | $305,500 |
| 63628 | Bonne Terre | St. Francois County | 16,416 | $63,602 | $204,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Jefferson County
Nearby counties
Frequently asked questions
How many ZIP codes are in Jefferson County, Missouri?
19 ZIP codes are mainly in Jefferson County, and 9 more ZIP codes from neighboring areas reach partly into it.
What cities are in Jefferson County?
ZIP codes in Jefferson County use the city names Arnold, Barnhart, Cedar Hill, Crystal City, De Soto, Dittmer, Fenton, Festus, Hematite, Herculaneum, High Ridge and Hillsboro and others.
What metro area is Jefferson County in?
Jefferson County is part of the St. Louis, MO-IL metropolitan statistical area.