Plain

County ZIP codes · Missouri · FIPS 29001

Adair County, MO ZIP Codes

Adair County, Missouri has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Adair County and 3 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $44,167 in 63544 (Green Castle) to $72,404 in 63546 (Greentop) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Adair County?

63501 · Kirksville: $61k63533 · Brashear: $80k63540 · Gibbs: $96k63544 · Green Castle: $44k63546 · Greentop: $72k63547 · Hurdland: $38k63549 · La Plata: $60k63557 · New Boston: $61k63559 · Novinger: $61k63501635446355963549635466355763547635336354063501 · Kirksville: $61k63533 · Brashear: $80k63540 · Gibbs: $96k63544 · Green Castle: $44k63546 · Greentop: $72k63547 · Hurdland: $38k63549 · La Plata: $60k63557 · New Boston: $61k63559 · Novinger: $61k63501635446355963549635466355763547635336354063501 · Kirksville: $61k63533 · Brashear: $80k63540 · Gibbs: $96k63544 · Green Castle: $44k63546 · Greentop: $72k63547 · Hurdland: $38k63549 · La Plata: $60k63557 · New Boston: $61k63559 · Novinger: $61k635016354463559635496354663557635476353363540
The residential ZIP codes of Adair 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 $59,881 and $60,729.

They carry 9 postal town names.

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

All 9 residential ZIP codes in Adair County

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

Residential ZIP codes mainly in Adair County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
63501 Kirksville 21,218 103 $61k $168k 100%
63546 Greentop 1,340 12 $72k $174k 65%
63559 Novinger 1,258 11 $61k $133k 88%
63544 Green Castle 1,159 8 $44k $109k 45%
63533 Brashear 1,141 18 $80k $188k 91%
63540 Gibbs 418 30 $96k $82k 100%

Partly in Adair County

Residential ZIP codes mainly in another county that reach at least 1% into Adair County, by their share here
In this county
63549 La Plata 2,344 17 $60k $136k 29%
63547 Hurdland 377 5 $38k $78k 11%
63557 New Boston 272 3 $61k $281k 9%

Download the 9 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?

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

Share of each ZIP code's land in Adair County and in the neighboring counties
ZIPIn AdairElsewhere
6354929%Macon County68%; Knox County2%
6354665%Schuyler County33%; Scotland County2%
6355988%Putnam County12%
6354445%Sullivan County43%; Putnam County12%
6353391%Knox County9%
6354711%Knox County89%
635579%Linn County66%; Macon County21%; Sullivan County3%

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

Which first three digits do Adair 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 Adair County starts with 635.

Three-digit prefixes of Adair 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 Adair County's
PrefixSectional centerHereAll codes
635Mid-Missouri, MO (SCF 650)933

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