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County ZIP codes · Georgia · FIPS 13237

Putnam County, GA ZIP Codes

Putnam County, Georgia has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 4 residential and 1 for PO boxes or a single organization. 1 of the residential ones lie mainly in Putnam County and 3 mainly in a neighboring county; 3 cross the county line. Median household income ranges from $54,263 in 31061 (Milledgeville) to $88,534 in 30625 (Buckhead) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Putnam County?

30625 · Buckhead: $89k31024 · Eatonton: $66k31038 · Hillsboro: $50k31061 · Milledgeville: $54k3106131024310383062530625 · Buckhead: $89k31024 · Eatonton: $66k31038 · Hillsboro: $50k31061 · Milledgeville: $54k3106131024310383062530625 · Buckhead: $89k31024 · Eatonton: $66k31038 · Hillsboro: $50k31061 · Milledgeville: $54k31061310243103830625
The residential ZIP codes of Putnam County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 4 postal town names: Milledgeville, Eatonton, Buckhead, Hillsboro.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 4 residential ZIP codes in Putnam County

1 ZIP code lies mainly in Putnam County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Putnam County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
31024 Eatonton 21,601 67 $66k $237k 100%

Partly in Putnam County

Residential ZIP codes mainly in another county that reach at least 1% into Putnam County, by their share here
In this county
30625 Buckhead 2,617 55 $89k $389k 12%
31038 Hillsboro 660 6 $50k $107k 9%
31061 Milledgeville 41,764 153 $54k $184k 1%

Download the 5 ZIP codes as CSV

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?

3 ZIP codes of Putnam County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Putnam County and in the neighboring counties
ZIPIn PutnamElsewhere
310611%Baldwin County 81%; Wilkinson County 15%; Hancock County 3%
3062512%Morgan County 88%
310389%Jones County 59%; Jasper County 32%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Putnam County without a residential area (GeoNames postal codes)
ZIPPostal name
31026Eatonton

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Putnam County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Putnam County's ZIP codes use 2 prefixes: 306 and 310.

Three-digit prefixes of Putnam County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Putnam County's
PrefixSectional centerHereAll codes
306 North Metro, GA (SCF 300) 1 52
310 Macon, GA (SCF 310) 4 92

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.