ZIP Code 63040

63040 is one of Missouri's ZIP codes, delivering to addresses in Grover, St. Louis County.

City: Grover
County: St. Louis County
State: Missouri
Prefix: 630xx

Where this code sits

63040 is part of the 630xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Grover.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 63040 delivers to without sharing its boundary.

ZIP codes nearest 63040

The ZIP codes whose reference points sit closest to 63040.
ZIP code	Distance	Delivers to
ZIP code 63038	2.3 mi	Glencoe, MO
ZIP code 63025	3.7 mi	Eureka, MO
ZIP code 63005	4.6 mi	Chesterfield, MO
ZIP code 63011	4.8 mi	Ballwin, MO
ZIP code 63022	5.0 mi	Ballwin, MO
ZIP code 63024	5.0 mi	Ballwin, MO
ZIP code 63021	5.7 mi	Ballwin, MO
ZIP code 63006	7.3 mi	Chesterfield, MO

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 63040, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 63040. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.