Sullivan County, Missouri ZIP codes
7 ZIP codes are in Sullivan County, plus 6 that cross in from neighboring counties.
- ZIP codes
- 7
- Population in these ZIPs
- 5,641
- Avg. median income
- $55,600population-weighted
- Cities & towns
- 7
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ZIP codes in Sullivan County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 63545 | Green City | 968 | $40,104 | $92,800 |
| 63556 | Milan | 3,196 | $58,851 | $108,700 |
| 63560 | Pollock | 61 | $56,607 | — |
| 64630 | Browning | 495 | $57,813 | $173,000 |
| 64645 | Harris | 195 | $53,125 | — |
| 64646 | Humphreys | 471 | $68,125 | — |
| 64667 | Newtown | 255 | $47,841 | $90,000 |
ZIP codes partly in Sullivan County
These ZIP codes are mostly in a neighboring county but cover part of Sullivan County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 63544 | Green Castle | Adair County | 1,159 | $44,167 | $218,000 |
| 63557 | New Boston | Linn County | 272 | $60,833 | $284,400 |
| 63565 | Unionville | Putnam County | 3,965 | $69,643 | $200,000 |
| 63566 | Winigan | Linn County | 72 | $97,396 | $100,000 |
| 64641 | Galt | Grundy County | 625 | $49,545 | $137,500 |
| 64652 | Laredo | Grundy County | 346 | $58,750 | $176,400 |
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 Sullivan County
Nearby counties
Frequently asked questions
How many ZIP codes are in Sullivan County, Missouri?
7 ZIP codes are mainly in Sullivan County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Sullivan County?
ZIP codes in Sullivan County use the city names Browning, Green City, Harris, Humphreys, Milan, Newtown and Pollock.