Delaware County, Iowa Zip Codes

Zip Code	City	Population
52057	Manchester	8,082
52040	Dyersville	5,644
52041	Earlville	1,901
52237	Hopkinton	1,623
52223	Delhi	1,162
52330	Ryan	943
52038	Dundee	529
52050	Greeley	433
52036	Delaware	139

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.