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County ZIP codes · Missouri · FIPS 29139

Montgomery County, MO ZIP Codes

Montgomery County, Missouri has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Montgomery County and 5 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $62,371 in 63361 (Montgomery City) to $78,281 in 63384 (Wellsville) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Montgomery County?

63333 · Bellflower: $65k63350 · High Hill: $69k63351 · Jonesburg: $68k63359 · Middletown: $75k63361 · Montgomery City: $62k63363 · New Florence: $47k63381 · Truxton: $112k63384 · Wellsville: $78k65041 · Hermann: $70k65069 · Rhineland: $78k65264 · Martinsburg: $46k650416336163359633636338465069633516526463333633816335063333 · Bellflower: $65k63350 · High Hill: $69k63351 · Jonesburg: $68k63359 · Middletown: $75k63361 · Montgomery City: $62k63363 · New Florence: $47k63381 · Truxton: $112k63384 · Wellsville: $78k65041 · Hermann: $70k65069 · Rhineland: $78k65264 · Martinsburg: $46k650416336163359633636338465069633516526463333633816335063333 · Bellflower: $65k63350 · High Hill: $69k63351 · Jonesburg: $68k63359 · Middletown: $75k63361 · Montgomery City: $62k63363 · New Florence: $47k63381 · Truxton: $112k63384 · Wellsville: $78k65041 · Hermann: $70k65069 · Rhineland: $78k65264 · Martinsburg: $46k65041633616335963363633846506963351652646333363381
The residential ZIP codes of Montgomery 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 11 postal town names.

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

All 11 residential ZIP codes in Montgomery County

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

Residential ZIP codes mainly in Montgomery County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
63361 Montgomery City 4,460 28 $62k $187k 76%
63384 Wellsville 2,049 25 $78k $129k 82%
63363 New Florence 949 11 $47k $98k 96%
63350 High Hill 769 33 $69k – 100%
63333 Bellflower 688 14 $65k $166k 93%
65069 Rhineland 511 7 $78k $202k 84%

Partly in Montgomery County

Residential ZIP codes mainly in another county that reach at least 1% into Montgomery County, by their share here
In this county
63351 Jonesburg 1,389 25 $68k $207k 45%
63359 Middletown 1,667 11 $75k $160k 36%
63381 Truxton 618 22 $112k $237k 33%
65041 Hermann 5,626 24 $70k $249k 18%
65264 Martinsburg 919 15 $46k $105k 5%

Download the 11 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?

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

Share of each ZIP code's land in Montgomery County and in the neighboring counties
ZIPIn MontgomeryElsewhere
6504118%Gasconade County 71%; Warren County 11%
6336176%Callaway County 24%
6338482%Audrain County 13%; Callaway County 4%
6335936%Pike County 53%; Audrain County 8%; Lincoln County 3%
6335145%Warren County 55%
6336396%Warren County 4%
652645%Audrain County 71%; Callaway County 24%
6333393%Lincoln County 7%
6338133%Warren County 34%; Lincoln County 33%
6506984%Callaway County 16%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Montgomery County's ZIP codes use 3 prefixes: 633, 650 and 652.

Three-digit prefixes of Montgomery 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 Montgomery County's
PrefixSectional centerHereAll codes
633 St Louis, MO (SCF 630) 8 51
650 Mid-Missouri, MO (SCF 650) 2 58
652 Mid-Missouri, MO (SCF 650) 1 52

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