Marion, IA: Population, ZIP Codes & Nearby Cities

Looking for facts about Marion? It is a small incorporated city in Linn County, Iowa, with an estimated 40,359 people according to our dataset. It lies at 42.045°N, 91.585°W in Central time. The sections below cover its size, ZIP codes, neighbors and distances.

What are the key facts about Marion, IA?

What is the population of Marion, IA?

Marion has an estimated population of 40,359. That makes it the 14th largest of the 1,003 places we list in Iowa, and the 2nd largest of 17 places in Linn County. The typical place in Iowa has about 408 residents, so Marion is many dozens of times larger than a typical place in the state.

Estimates for places of this size carry wider margins of error than those for big cities, so treat the figure as a guide to scale. Our guide to understanding city population numbers explains why sources disagree.

Places in Iowa with a similar population include Urbandale (44,379), Cedar Falls (40,536), Bettendorf (36,543), Clinton (30,177), Burlington (28,474). Comparing these pages is a quick way to see how Marion differs from communities of the same scale.

How dense is Marion?

Marion has about 2,277 people per square mile (879 per square kilometer), which we classify as suburban. Within Iowa, it is denser than about 99% of the listed places. Land at this level is usually a mix of single-family neighborhoods, shopping corridors and parks, where driving is common but destinations are close. Read how to interpret population density to see how we draw these lines.

What ZIP codes does Marion use?

The postal data lists a single ZIP code for Marion: 52302. A single code usually means a compact delivery area, but the same code may also serve addresses just outside the town line. Codes beginning with 5 are assigned to the Upper Midwest and northern Plains (Iowa, Minnesota, Montana, the Dakotas and Wisconsin). Learn more in our guide to how ZIP codes work or check any code with the ZIP code lookup.

What time zone is Marion in?

Marion is in the Central time zone, which is UTC−6 from Coordinated Universal Time in standard time (IANA zone America/Chicago). The area observes daylight saving time, so clocks move forward in March and back in November. The nearest listed place in a different time zone is Attica, IN, about 256 miles away, which gives a sense of how far the nearest zone boundary may be. Current local time: see the Central time hub. For the rules behind these zones, read US time zones explained.

Where is Marion located in Iowa?

Marion lies in the eastern part of Iowa, at 42.045° north latitude and 91.585° west longitude. The state capital, Des Moines, is about 109 miles to the west. The closest listed place in another state is Rock Island, IL, roughly 65 miles to the southeast, which shows how near Marion is to a state line. For big-city services, the nearest place with more than 100,000 people is Cedar Rapids, IA, 7 miles to the southwest.

Which cities are near Marion, IA?

The closest listed place to Marion is Hiawatha, IA, 5.5 miles to the west. Of the eight nearest places below, 3 are in the same county. Distances are straight-line (great-circle) miles measured between place centers; see how distance is calculated.

Which county is Marion in?

Marion is in Linn County, which has the Federal Information Processing Standards (FIPS) code 19113. The county contains 17 places in our data, 4 of which have their own page here and 13 smaller communities that appear only in county and state lists. Other places in the county include Cedar Rapids (188,038), Hiawatha (7,420), Mount Vernon (6,398), Robins (3,537), Fairfax (2,856). Codes like this one help separate places that share a name; see the guide to counties and FIPS codes.

How far is Marion from major US cities?

Among six major hubs, Marion is closest to Chicago, IL at about 201 miles and farthest from Los Angeles, CA at about 1,550 miles in a straight line. Road distances are usually 10 to 30 percent longer. Try the distance calculator for any other pair.

Are there other places called Marion?

Yes. Our data lists 21 other places named Marion: Marion, OH (45,181), Marion, IN (40,588), Marion, IL (17,520), Marion, NC (13,454), Marion, AR (12,310), Marion, VA (7,414), Marion, SC (6,804), Marion, AL (3,123), and 13 more. When you search for Marion, add the state or county so you land on the right one. This page covers the Marion in Linn County, Iowa.

Planning a move to Marion?

If you are weighing Marion, start with the practical numbers: how far it is from where you live, whether it changes your time zone, and how its size and density compare with your current city. Use the distance calculator to measure the trip from where you live. The radius search tool lists every place within any distance of it. Our checklist for comparing cities explains what to check next.

Where to go next

Population and density come from a compiled dataset and are estimates. They may differ from official Census Bureau counts. Verify important figures at census.gov.