Plain

County ZIP codes · Georgia · FIPS 13009

Baldwin County, GA ZIP Codes

Baldwin County, Georgia has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 7 residential and 1 for PO boxes or a single organization. 3 of the residential ones lie mainly in Baldwin County and 4 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $37,679 in 31087 (Sparta) to $57,308 in 31082 (Sandersville) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Baldwin County?

31031 · Gordon: $55k31033 · Haddock: $69k31034 · Hardwick: –31061 · Milledgeville: $54k31062 · Milledgeville: –31082 · Sandersville: $57k31087 · Sparta: $38k310873106131082310313103331031 · Gordon: $55k31033 · Haddock: $69k31034 · Hardwick: –31061 · Milledgeville: $54k31062 · Milledgeville: –31082 · Sandersville: $57k31087 · Sparta: $38k310873106131082310313103331031 · Gordon: $55k31033 · Haddock: $69k31034 · Hardwick: –31061 · Milledgeville: $54k31062 · Milledgeville: –31082 · Sandersville: $57k31087 · Sparta: $38k3108731061310823103131033
The residential ZIP codes of Baldwin 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?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $37,679 and $54,542.

They carry 6 postal town names: Milledgeville, Sandersville, Sparta, Gordon, Haddock, Hardwick.

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

All 7 residential ZIP codes in Baldwin County

3 ZIP codes lie mainly in Baldwin County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Baldwin County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
31061 Milledgeville 41,764 153 $54k $184k 81%
31062 Milledgeville 27 88 – – 100%
31034 Hardwick 10 278 – – 100%

Partly in Baldwin County

Residential ZIP codes mainly in another county that reach at least 1% into Baldwin County, by their share here
In this county
31031 Gordon 6,948 55 $55k $125k 13%
31033 Haddock 2,755 41 $69k $170k 11%
31082 Sandersville 10,236 45 $57k $121k 3%
31087 Sparta 8,846 20 $38k $88k 2%

Download the 8 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?

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

Share of each ZIP code's land in Baldwin County and in the neighboring counties
ZIPIn BaldwinElsewhere
3106181%Wilkinson County15%; Hancock County3%; Putnam County1%
310823%Washington County97%
310872%Hancock County98%
3103113%Wilkinson County66%; Twiggs County17%; Jones County4%
3103311%Jones County89%

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

PO Box and single-organization ZIP codes

ZIP codes in Baldwin County without a residential area (GeoNames postal codes)
ZIPPostal name
31059Milledgeville

Source: GeoNames postal codes (CC BY 4.0).

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Baldwin County starts with 310.

Three-digit prefixes of Baldwin 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 Baldwin County's
PrefixSectional centerHereAll codes
310Macon, GA (SCF 310)892

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