Putnam County, Illinois ZIP codes
7 ZIP codes are in Putnam County, plus 1 that cross in from neighboring counties. It's part of the Ottawa, IL micro area.
- ZIP codes
- 7
- Population in these ZIPs
- 5,673
- Avg. median income
- $78,700population-weighted
- Cities & towns
- 7
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Putnam County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 61326 | Granville | 1,953 | $70,880 | $174,900 |
| 61327 | Hennepin | 1,442 | $89,306 | $229,900 |
| 61335 | Mc Nabb | 312 | $71,750 | $169,600 |
| 61336 | Magnolia | 694 | $92,298 | $174,300 |
| 61340 | Mark | 545 | $78,750 | $160,100 |
| 61363 | Standard | 250 | $60,000 | $108,100 |
| 61560 | Putnam | 477 | $73,333 | $223,700 |
ZIP codes partly in Putnam County
These ZIP codes are mostly in a neighboring county but cover part of Putnam County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 61334 | Lostant | LaSalle County | 738 | $86,250 | $172,200 |
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 Putnam County
Nearby counties
Frequently asked questions
How many ZIP codes are in Putnam County, Illinois?
7 ZIP codes are mainly in Putnam County, and 1 more ZIP codes from neighboring areas reach partly into it.
What cities are in Putnam County?
ZIP codes in Putnam County use the city names Granville, Hennepin, Magnolia, Mark, Mc Nabb, Putnam and Standard.
What metro area is Putnam County in?
Putnam County is part of the Ottawa, IL micropolitan statistical area.