51528.

The main postal place listed for 51528 is Dow City, Iowa. A postal place name is not necessarily an incorporated city. Other recorded associations are listed above.

Recorded county-level associations for 51528: Crawford (IA). Postal and county boundaries do not necessarily coincide; use the full address to establish a specific jurisdiction.

The primary record associates 51528 with Iowa (IA). Postal region codes also cover territories, military mail and some independent countries; they do not all represent US states.

Yes. This directory records 1 distinct postal place names for 51528. These are recorded associations, not a certification that every name is accepted for mailing; verify the complete address before sending.

ZIP codes organize mail delivery, not administrative boundaries. A code can have several city or county associations. Coordinates are approximate; verify delivery addresses with your carrier.

No. A postal ZIP, a school district and a school attendance zone are different geographies. A school using the same mailing ZIP does not establish enrollment eligibility. Check the complete residential address with the district’s official locator.

The matching Census ZCTA 51528 recorded 829 residents in 2020. This is a historical Census count for a statistical area, not the current population of a USPS delivery area.

Compare the geography, reference year and method first. A Census count, an ACS five-year estimate and a city or county total are different products. A newer website check date does not make an older statistical year current.

This page does not yet publish a verified ACS income estimate for the matching ZCTA. City or county income is not a substitute. When available, the value will identify its survey period and dollar year; missing income is not zero.

No. Households correspond to occupied housing units, while total housing units also include vacant units. Neither figure is a count of postal addresses or people. Compare the same geography and statistical year.

No. Survey-based median home value and median gross rent are historical statistics for defined housing groups, not current listings, sale prices or quotes. This page does not claim housing values that have not been imported and verified.

51528 is the five-digit code. ZIP+4 adds four digits for a more specific postal segment. The extra digits cannot be inferred from the city or five-digit code alone; use USPS lookup with the full address.

Yes. Store and copy ZIP codes as five-character text, including any leading zeroes. Use 51528 exactly as displayed. Spreadsheet number formatting can otherwise remove zeroes and change the code.

No. This is a postal-location directory, not address-level delivery validation. Check the street number, street, unit, city and ZIP with USPS or the chosen carrier before shipping.

A ZIP listing does not establish carrier coverage, fees or delivery speed. Use the carrier’s official tools with the full address, shipment details and date. Our help page links to their reference pages.

These are different postal classifications. This directory does not yet certify the classification of 51528; it cannot be inferred from the city name, population or map point. Use official address tools before deciding how to ship.

Nearby entries with available coordinates include 51520 (Arion), 51529 (Dunlap), 51530 (Earling). The list uses approximate postal locations and may omit entries without coordinates; it is not a list of shared delivery boundaries.

No. Distances are straight-line estimates between approximate postal coordinates, not street addresses. They do not include roads, traffic, ferries or delivery routes and cannot predict travel time.

Last successful directory check: 2026-11-10. A completed check does not mean every record changed. Expand the record-change details for its actual modification date; population reference years and checks are separate. This is not real-time delivery validation.

A ZIP or state name alone is not a reliable address-level time-zone check. Boundaries and daylight-saving rules matter. No verified time-zone field is published here yet; do not treat an approximate map point as a live clock.