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County ZIP codes · Illinois · FIPS 17071

Henderson County, IL ZIP Codes

Henderson County, Illinois has 17 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Henderson County and 9 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $54,932 in 61469 (Oquawka) to $64,113 in 61462 (Monmouth) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Henderson County?

61418 · Biggsville: $84k61425 · Carman: $63k61437 · Gladstone: $66k61442 · Keithsburg: $49k61447 · Kirkwood: $83k61450 · La Harpe: $60k61453 · Little York: $58k61454 · Lomax: $51k61460 · Media: $77k61462 · Monmouth: $64k61469 · Oquawka: $55k61471 · Raritan: $69k61475 · Sciota: $85k61476 · Seaton: $88k61478 · Smithshire: $76k61480 · Stronghurst: $59k62330 · Dallas City: $61k6146262330614506148061453614476146961418614766142561454614756147861437614426146061418 · Biggsville: $84k61425 · Carman: $63k61437 · Gladstone: $66k61442 · Keithsburg: $49k61447 · Kirkwood: $83k61450 · La Harpe: $60k61453 · Little York: $58k61454 · Lomax: $51k61460 · Media: $77k61462 · Monmouth: $64k61469 · Oquawka: $55k61471 · Raritan: $69k61475 · Sciota: $85k61476 · Seaton: $88k61478 · Smithshire: $76k61480 · Stronghurst: $59k62330 · Dallas City: $61k61462623306145061480614536144761469614186147661425614546147561478614376144261418 · Biggsville: $84k61425 · Carman: $63k61437 · Gladstone: $66k61442 · Keithsburg: $49k61447 · Kirkwood: $83k61450 · La Harpe: $60k61453 · Little York: $58k61454 · Lomax: $51k61460 · Media: $77k61462 · Monmouth: $64k61469 · Oquawka: $55k61471 · Raritan: $69k61475 · Sciota: $85k61476 · Seaton: $88k61478 · Smithshire: $76k61480 · Stronghurst: $59k62330 · Dallas City: $61k61462623306145061480614536146961418614766142561454614756147861437
The residential ZIP codes of Henderson 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 17 postal town names.

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

All 17 residential ZIP codes in Henderson County

8 ZIP codes lie mainly in Henderson County; 9 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Henderson County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
61469 Oquawka 1,818 44 $55k $105k 100%
61480 Stronghurst 1,236 17 $59k $118k 100%
61425 Carman 672 20 $63k $91k 100%
61454 Lomax 579 17 $51k $83k 100%
61418 Biggsville 575 12 $84k $99k 100%
61437 Gladstone 549 15 $66k $131k 100%
61460 Media 180 6 $77k $97k 100%
61471 Raritan 134 1,411 $69k $88k 100%

Partly in Henderson County

Residential ZIP codes mainly in another county that reach at least 1% into Henderson County, by their share here
In this county
61453 Little York 677 12 $58k $88k 42%
61447 Kirkwood 1,020 24 $83k $96k 31%
61476 Seaton 551 12 $88k $123k 28%
61442 Keithsburg 504 18 $49k $67k 21%
61478 Smithshire 420 12 $76k $104k 14%
62330 Dallas City 1,472 17 $61k $97k 9%
61450 La Harpe 1,812 24 $60k $95k 7%
61462 Monmouth 10,458 74 $64k $103k 4%
61475 Sciota 180 5 $85k $141k 2%

Download the 17 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?

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

Share of each ZIP code's land in Henderson County and in the neighboring counties
ZIPIn HendersonElsewhere
614624%Warren County 96%
614507%Hancock County 89%; McDonough County 4%
623309%Hancock County 91%
6144731%Warren County 69%
6145342%Warren County 58%
6147628%Mercer County 72%
6144221%Mercer County 79%
6147814%Warren County 86%
614752%McDonough County 86%; Warren County 12%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Henderson County's ZIP codes use 2 prefixes: 614 and 623.

Three-digit prefixes of Henderson 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 Henderson County's
PrefixSectional centerHereAll codes
614 Peoria, IL (SCF 615) 16 73
623 Springfield, IL (SCF 625) 1 54

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