What ZIP codes does Iowa use for mail and package delivery?

Iowa (IA) operates within the 5-digit ZIP prefix range 500xx–528xx, covering numeric postal codes from 50001 – 52809. Mail routed to state capital Des Moines and key regional centers such as Des Moines, Cedar Rapids, Davenport adheres to these official USPS boundaries.

Which telephone area codes are valid for Iowa?

Iowa is served by 5 active North American Numbering Plan (NANPA) area codes: 319, 515, 563, 641, 712. Synthetic telephone numbers generated for Iowa reflect these verified regional area code assignments across state jurisdictions.

How many counties are in Iowa?

Iowa is divided into 99 counties, including major administrative regions such as Polk, Linn, Scott, Black Hawk. Generated street addresses reflect these authentic jurisdictional subdivisions and their corresponding postal distribution points.

What postal formatting conventions and addressing quirks are unique to Iowa?

Cross-river border city postal overlapping with Nebraska (Council Bluffs/Omaha) and Illinois (Quad Cities: Davenport/Bettendorf/Rock Island/Moline) crossing multiple state economic zones. Section-line rural road grids across 99 counties featuring county-maintained gravel route designations. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.

Are the Iowa addresses generated on this page real places?

No. All street numbers, recipient names, and telephone numbers generated for Iowa are entirely synthetic and randomized for software testing, database seed scripts, and form validation. While they use authentic Iowa ZIP codes (500xx–528xx), real city names (Des Moines, Cedar Rapids), and verified area codes (319, 515), they do not correspond to real individuals or private residences.

Random Iowa Address Generator

Iowa ZIP codes span the 500xx–528xx range (50001 – 52809) across 99 counties with 5 active telephone area codes (319, 515, 563, 641, etc.).

Generate a realistic, USPS Publication 28-compliant random Iowa address with authentic postal routing, real ZIP codes, and local area codes. Featuring verified ZIP prefix coverage across 500xx–528xx, realistic street grids from Des Moines and Cedar Rapids, official area codes (319, 515, 563, 641), and accurate county assignments. Engineered specifically for QA automation, form validation, and software testing.

Official Iowa Postal & Geographic Reference Specifications

Geographic & Postal Parameter	Official State Specification	Standardization Reference
Postal State Abbreviation	IA	USPS Publication 28 & ISO 3166-2:US
5-Digit ZIP Prefix Range	500xx–528xx	USPS Sectional Center Facilities (SCFs)
5-Digit ZIP Numeric Span	`50001 – 52809`	Lowest to highest active postal delivery codes
Administrative Jurisdictions	99 Total Counties	US Census Bureau regional boundaries
Active Area Codes (NANPA)	`319, 515, 563, 641, 712` (5 total)	North American Numbering Plan Administrator
Capital & Distribution Centers	Des Moines (Capital), Des Moines, Cedar Rapids, Davenport	Primary municipal carrier distribution hubs
Primary Time Zone	Central Time (America/Chicago, UTC-6 / UTC-5 DST)	Regional postal dispatch & timestamp alignment
Authoritative Validation Source	Iowa Utilities Board & NANPA	Official state regulatory authority

Iowa Postal Geography & Key Cities

State Capital: Des Moines | Postal Code: IA | Total Counties: 99 Counties | ZIP Prefix Range: 500xx–528xx

Verified Data Authority: Iowa Utilities Board & NANPA

Major municipal distribution centers:

Des Moines
Cedar Rapids
Davenport
Sioux City
Iowa City

Key Counties & Administrative Jurisdictions

County boundaries dictate local sales tax jurisdictions and carrier route groupings across Iowa:

Polk County
Linn County
Scott County
Black Hawk County
Johnson County

Real Iowa Area Codes (IA)

5 active numbering plan area (NPA) codes serving 99 jurisdictions across Iowa.

Active North American Numbering Plan area codes: 319, 515, 563, 641, 712

Postal Delivery Standards & Format Nuances in Iowa

Cross-river border city postal overlapping with Nebraska (Council Bluffs/Omaha) and Illinois (Quad Cities: Davenport/Bettendorf/Rock Island/Moline) crossing multiple state economic zones.
Section-line rural road grids across 99 counties featuring county-maintained gravel route designations.

Standard USPS Publication 28 Test Examples for Iowa

Residential Delivery Point:
100 Main St, Apt 4B Des Moines, IA 50309-1204

Commercial / Multi-Unit Delivery Point:
Iowa Logistics & Software Corp 500 Enterprise Way, Suite 300 Cedar Rapids, IA 52401-4810

Frequently Asked Questions about Iowa Addresses

What ZIP codes does Iowa use for mail and package delivery?: Iowa (IA) operates within the 5-digit ZIP prefix range 500xx–528xx, covering numeric postal codes from 50001 – 52809. Mail routed to state capital Des Moines and key regional centers such as Des Moines, Cedar Rapids, Davenport adheres to these official USPS boundaries.
Which telephone area codes are valid for Iowa?: Iowa is served by 5 active North American Numbering Plan (NANPA) area codes: 319, 515, 563, 641, 712. Synthetic telephone numbers generated for Iowa reflect these verified regional area code assignments across state jurisdictions.
How many counties are in Iowa?: Iowa is divided into 99 counties, including major administrative regions such as Polk, Linn, Scott, Black Hawk. Generated street addresses reflect these authentic jurisdictional subdivisions and their corresponding postal distribution points.
What postal formatting conventions and addressing quirks are unique to Iowa?: Cross-river border city postal overlapping with Nebraska (Council Bluffs/Omaha) and Illinois (Quad Cities: Davenport/Bettendorf/Rock Island/Moline) crossing multiple state economic zones. Section-line rural road grids across 99 counties featuring county-maintained gravel route designations. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.
Are the Iowa addresses generated on this page real places?: No. All street numbers, recipient names, and telephone numbers generated for Iowa are entirely synthetic and randomized for software testing, database seed scripts, and form validation. While they use authentic Iowa ZIP codes (500xx–528xx), real city names (Des Moines, Cedar Rapids), and verified area codes (319, 515), they do not correspond to real individuals or private residences.

Nearby & Bordering States

Explore test address generators for states sharing a geographic border with IA:

Iowa ZIP Prefixes and Sectional Center Facilities

Mail addressed to Iowa is sorted through the processing facilities below before local delivery. The first three digits of a ZIP code identify which one, so the prefix alone places an address within the state.

ZIP prefix	Sectional Center Facility	County
503xx	Des Moines	Polk County
524xx	Cedar Rapids	Linn County

These 2 prefixes cover the 500xx–528xx range. Look up any ZIP prefix to see its facility and generate valid ZIP codes inside it.