Lester Iowa ZIP Codes

Lester holds a single ZIP code.

Every ZIP code in Lester

The complete list of Lester, Iowa ZIP codes with the county each falls in.
ZIP code	County
51242	Lyon 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Lester codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Lester. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Lester 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 Lester accounts for 5% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Lester

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 Lester occupies.

712 Area code 712

Lester Iowa area codes in full →

Where Lester's ZIP codes sit

Each point is one Lester ZIP code, plotted from its record coordinates.

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

Cities near Lester

The closest places to Lester with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Larchwood Iowa ZIP codes	5.4 mi	1 ZIP code
Alvord Iowa ZIP codes	7.0 mi	1 ZIP code
Rock Rapids Iowa ZIP codes	8.3 mi	1 ZIP code
Inwood Iowa ZIP codes	10 mi	1 ZIP code
Doon Iowa ZIP codes	12 mi	1 ZIP code
Rock Valley Iowa ZIP codes	17 mi	1 ZIP code
George Iowa ZIP codes	18 mi	1 ZIP code
Hull Iowa ZIP codes	20 mi	1 ZIP code

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