County ZIP codes · Missouri · FIPS 29179

Reynolds County, MO ZIP Codes

Reynolds County, Missouri has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 11 residential and 1 for PO boxes or a single organization. 5 of the residential ones lie mainly in Reynolds County and 6 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $37,697 in 63965 (Van Buren) to $55,257 in 63638 (Ellington) (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

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

How different are its ZIP codes?

63965 · $38k 63638 · $55k

They carry 11 postal town names.

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

All 11 residential ZIP codes in Reynolds County

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

Residential ZIP codes mainly in Reynolds County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
63638	Ellington	2,489	8	$55k	$138k	82%
63633	Centerville	775	8	$53k	$158k	100%
63654	Lesterville	752	11	$37k	$188k	99%
63625	Black	382	5	–	$211k	82%
63665	Redford	313	4	$28k	$126k	100%

Partly in Reynolds County

Residential ZIP codes mainly in another county that reach at least 1% into Reynolds County, by their share here
						In this county
63656	Middle Brook	576	8	$47k	$102k	49%
65440	Boss	206	2	$37k	$107k	40%
63629	Bunker	947	3	$47k	$104k	33%
63957	Piedmont	5,144	25	$44k	$119k	24%
63620	Annapolis	1,036	5	$42k	$203k	11%
63965	Van Buren	2,607	12	$38k	$156k	3%

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?

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

Share of each ZIP code's land in Reynolds County and in the neighboring counties
ZIP	In Reynolds	Elsewhere
63957	24%	Wayne County 76%
63965	3%	Carter County 97%
63638	82%	Shannon County 18%
63620	11%	Iron County 69%; Madison County 21%
63629	33%	Shannon County 48%; Dent County 19%
63654	99%	Iron County 1%
63656	49%	Iron County 51%
63625	82%	Iron County 18%
65440	40%	Dent County 55%; Iron County 5%

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

PO Box and single-organization ZIP codes

ZIP codes in Reynolds County without a residential area (GeoNames postal codes)
ZIP	Postal name
63666	Reynolds

Source: GeoNames postal codes (CC BY 4.0).

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Reynolds County's ZIP codes use 3 prefixes: 636, 639 and 654.

Three-digit prefixes of Reynolds 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 Reynolds County's
Prefix	Sectional center	Here	All codes
636	St Louis, MO (SCF 630)	9	37
639	St Louis, MO (SCF 630)	2	32
654	Springfield, MO (SCF 656)	1	29

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

Where are the ZIP codes of Reynolds County?