ZIP Code 64840

64840 is one of Missouri's ZIP codes, delivering to addresses in Diamond, Newton County.

City: Diamond
County: Newton County
State: Missouri
Prefix: 648xx

Where this code sits

64840 is part of the 648xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Diamond.

Diamond Missouri ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 64840 delivers to without sharing its boundary.

417 Area code 417

ZIP codes nearest 64840

The ZIP codes whose reference points sit closest to 64840.
ZIP code	Distance	Delivers to
ZIP code 64841	6.8 mi	Duenweg, MO
ZIP code 64844	7.5 mi	Granby, MO
ZIP code 64864	8.3 mi	Saginaw, MO
ZIP code 64850	10 mi	Neosho, MO
ZIP code 64836	11 mi	Carthage, MO
ZIP code 64804	11 mi	Joplin, MO
ZIP code 64853	12 mi	Newtonia, MO
ZIP code 64835	12 mi	Carterville, 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 64840, plotted from its record coordinates.

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

Scope ZIP code 64840. 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.