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Larchwood Iowa ZIP Codes

Larchwood holds a single ZIP code.

Every ZIP code in Larchwood

The complete list of Larchwood, Iowa ZIP codes with the county each falls in.
ZIP codeCounty
51241Lyon 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Larchwood codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Larchwood. 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 Larchwood ZIP code begins 512. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 20 ZIP codes, so Larchwood accounts for 5% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Larchwood

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

Larchwood Iowa area codes in full →

Where Larchwood's ZIP codes sit

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

Cities near Larchwood

The closest places to Larchwood with their own ZIP code list, nearest first.
CityDistanceZIP codes
Lester Iowa ZIP codes5.4 mi1 ZIP code
Inwood Iowa ZIP codes10 mi1 ZIP code
Alvord Iowa ZIP codes10 mi1 ZIP code
Rock Rapids Iowa ZIP codes14 mi1 ZIP code
Doon Iowa ZIP codes16 mi1 ZIP code
Rock Valley Iowa ZIP codes19 mi1 ZIP code
George Iowa ZIP codes23 mi1 ZIP code
Hull Iowa ZIP codes24 mi1 ZIP code

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