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Richwood Ohio ZIP Codes

Richwood holds a single ZIP code.

Every ZIP code in Richwood

The complete list of Richwood, Ohio ZIP codes with the county each falls in.
ZIP codeCounty
43344Union County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Richwood codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Richwood. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Richwood ZIP code begins 433. Those first three digits identify the sectional center facility that processes mail for this part of Ohio. Statewide that range covers 43 ZIP codes, so Richwood accounts for 2% of it.

Every Ohio ZIP prefix and the region it covers →

Area codes covering Richwood

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Richwood occupies.

Richwood Ohio area codes in full →

Where Richwood's ZIP codes sit

Each point is one Richwood ZIP code, plotted from its record coordinates.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Cities near Richwood

The closest places to Richwood with their own ZIP code list, nearest first.
CityDistanceZIP codes
Magnetic Springs Ohio ZIP codes5.4 mi1 ZIP code
Prospect Ohio ZIP codes6.0 mi1 ZIP code
Green Camp Ohio ZIP codes8.5 mi1 ZIP code
New Bloomington Ohio ZIP codes11 mi1 ZIP code
Waldo Ohio ZIP codes11 mi1 ZIP code
La Rue Ohio ZIP codes11 mi1 ZIP code
Ostrander Ohio ZIP codes12 mi1 ZIP code
West Mansfield Ohio ZIP codes13 mi1 ZIP code

Straight-line distance between place reference points, not driving distance.