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County ZIP codes · Missouri · FIPS 29045

Clark County, MO ZIP Codes

Clark County, Missouri has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Clark County and 5 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $48,370 in 63445 (Kahoka) to $62,102 in 63435 (Canton) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Clark County?

52573 · Mount Sterling: $35k52626 · Farmington: $59k63430 · Alexandria: $65k63432 · Arbela: $61k63435 · Canton: $62k63445 · Kahoka: $48k63453 · Luray: $74k63465 · Revere: $57k63466 · Saint Patrick: –63472 · Wayland: $23k63473 · Williamstown: $57k63474 · Wyaconda: $51k6344563435526266343063465634746343263473634535257352573 · Mount Sterling: $35k52626 · Farmington: $59k63430 · Alexandria: $65k63432 · Arbela: $61k63435 · Canton: $62k63445 · Kahoka: $48k63453 · Luray: $74k63465 · Revere: $57k63466 · Saint Patrick: –63472 · Wayland: $23k63473 · Williamstown: $57k63474 · Wyaconda: $51k6344563435526266343063465634746343263473634535257352573 · Mount Sterling: $35k52626 · Farmington: $59k63430 · Alexandria: $65k63432 · Arbela: $61k63435 · Canton: $62k63445 · Kahoka: $48k63453 · Luray: $74k63465 · Revere: $57k63466 · Saint Patrick: –63472 · Wayland: $23k63473 · Williamstown: $57k63474 · Wyaconda: $51k63445634355262663430634656347463432634736345352573
The residential ZIP codes of Clark 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 12 postal town names.

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

All 12 residential ZIP codes in Clark County

7 ZIP codes lie mainly in Clark County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Clark County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
63445 Kahoka 3,831 25 $48k $109k 100%
63465 Revere 633 11 $57k $262k 100%
63430 Alexandria 457 9 $65k – 100%
63474 Wyaconda 444 6 $51k $68k 94%
63472 Wayland 439 526 $23k – 100%
63453 Luray 388 7 $74k $225k 100%
63466 Saint Patrick no residents 0 – – 100%

Partly in Clark County

Residential ZIP codes mainly in another county that reach at least 1% into Clark County, by their share here
In this county
63473 Williamstown 375 6 $57k $166k 48%
63435 Canton 4,318 30 $62k $152k 32%
52573 Mount Sterling 148 4 $35k $258k 24%
52626 Farmington 1,103 13 $59k $106k 22%
63432 Arbela 363 4 $61k $134k 12%

Download the 12 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?

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

Share of each ZIP code's land in Clark County and in the neighboring counties
ZIPIn ClarkElsewhere
6343532%Lewis County 68%
5262622%Lee County 55%; Van Buren County 24%
6347494%Scotland County 4%; Lewis County 2%
6347348%Lewis County 52%
6343212%Scotland County 88%
5257324%Van Buren County 65%; Scotland County 11%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Clark County's ZIP codes use 3 prefixes: 525, 526 and 634.

Three-digit prefixes of Clark 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 Clark County's
PrefixSectional centerHereAll codes
525 Des Moines, IA (SCF 500) 1 50
526 Quad Cities, IL (SCF 612) 1 36
634 St Louis, MO (SCF 630) 10 42

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