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County ZIP codes · Illinois · FIPS 17155

Putnam County, IL ZIP Codes

Putnam County, Illinois has 7 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones extend into a neighboring county. Median household income ranges from $70,880 in 61326 (Granville) to $89,306 in 61327 (Hennepin) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Putnam County?

61326 · Granville: $71k61327 · Hennepin: $89k61335 · McNabb: $72k61336 · Magnolia: $92k61340 · Mark: $79k61363 · Standard: $60k61560 · Putnam: $73k613366132761326615606133561326 · Granville: $71k61327 · Hennepin: $89k61335 · McNabb: $72k61336 · Magnolia: $92k61340 · Mark: $79k61363 · Standard: $60k61560 · Putnam: $73k613366132761326615606133561326 · Granville: $71k61327 · Hennepin: $89k61335 · McNabb: $72k61336 · Magnolia: $92k61340 · Mark: $79k61363 · Standard: $60k61560 · Putnam: $73k6133661327613266156061335
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 7 postal town names: Granville, Hennepin, Magnolia, Mark, Putnam, McNabb, Standard.

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

All 7 residential ZIP codes in Putnam County

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
61326 Granville 1,953 41 $71k $148k 100%
61327 Hennepin 1,442 40 $89k $211k 100%
61336 Magnolia 694 19 $92k $174k 56%
61340 Mark 545 625 $79k $160k 100%
61560 Putnam 477 14 $73k $222k 92%
61335 McNabb 312 15 $72k $170k 100%
61363 Standard 250 486 $60k $108k 100%

Download the 7 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?

2 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
6133656%Marshall County 44%
6156092%Marshall County 4%; Bureau County 4%

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

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: 613 and 615.

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
613 Peoria, IL (SCF 615) 6 62
615 Peoria, IL (SCF 615) 1 48

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