Zip Code 50703 — Waterloo, IA

ZIP Code 50703 is associated with Waterloo, IA, in Black Hawk County. The listed population estimate is 17,952; estimated density is 74.3 people per square mile. Among records with population estimates, it ranks #4 of 12 in Black Hawk County and #47 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.548170, -92.281950)

Data MetricLocal Statistic
Postal / Zip Code50703
Primary CityWaterloo
State / ProvinceIA
CountyBlack Hawk
Total Population17,952
Population Density74.3 people/sq mi
TimezoneAmerica/Chicago

How 50703 Compares

MetricZIP 50703Black Hawk County recordsIA records
Population estimate17,952134,441 (sum)3,210,984 (sum)
Population Density74.3 /sq mi----
County population rank#4 of 12----
State population rank#47 of 969----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in IA

ZIP CodeCityDistancePopulation estimate
ZIP 50623Dewar4.0 mi153
ZIP 50707Evansdale4.9 mi7,784
ZIP 50626Dunkerton6.1 mi1,468
ZIP 50667Raymond6.1 mi899
ZIP 50702Waterloo6.5 mi20,882

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →