Introducing a new way to navigate by topics. Access the latest news, data, publications and more around topics of interest.
Our population statistics cover age, sex, race, Hispanic origin, migration, ancestry, language use, veterans, as well as population estimates and projections.
This section provides information on a range of educational topics, from educational attainment and school enrollment to school districts, costs and financing.
We measure the state of the nations workforce, including employment and unemployment levels, weeks and hours worked, occupations, and commuting.
Our statistics highlight trends in household and family composition, describe characteristics of the residents of housing units, and show how they are related.
Health statistics on insurance coverage, disability, fertility and other health issues are increasingly important in measuring the nation's overall well-being.
We measure the housing and construction industry, track homeownership rates, and produce statistics on the physical and financial characteristics of our homes.
The U.S. Census Bureau is the official source for U.S. export and import statistics and regulations governing the reporting of exports from the U.S.
The U.S. Census Bureau provides data for the Federal, state and local governments as well as voting, redistricting, apportionment and congressional affairs.
Search an alphabetical index of keywords and phrases to access Census Bureau statistics, publications, products, services, data, and data tools.
Geography provides the framework for Census Bureau survey design, sample selection, data collection, tabulation, and dissemination.
Geography is central to the work of the Bureau, providing the framework for survey design, sample selection, data collection, tabulation, and dissemination.
Find resources on how to use geographic data and products with statistical data, educational blog postings, and presentations.
The Geographic Support System Initiative will integrate improved address coverage, spatial feature updates, and enhanced quality assessment and measurement.
Work with interactive mapping tools from across the Census Bureau.
Find geographic data and products such as Shapefiles, KMLs, TIGERweb, boundary files, geographic relationship files, and reference and thematic maps.
Metropolitan and micropolitan areas are geographic entities used by Federal statistical agencies in collecting, tabulating, and publishing Federal statistics.
Find information about specific partnership programs and learn more about our partnerships with other organizations.
Definitions of geographic terms, why geographic areas are defined, and how the Census Bureau defines geographic areas.
We conduct research on geographic topics such as how to define geographic areas and how geography changes over time.
Visit our library of Census Bureau multimedia files. Collection formats include audio, video, mobile apps, images, and publications.
Collection of audio features and sound bites.
The Census Bureau packages data and information into easy-to-understand visuals.
Browse Census Bureau images.
Read briefs and reports from Census Bureau experts.
Watch Census Bureau vignettes, testimonials, and video files.
Read research analyses from Census Bureau experts.
Access data through products and tools including data visualizations, mobile apps, interactive web apps and other software.
Developer portal to access services and documentation for the Census Bureau's APIs.
Explore Census Bureau data on your mobile device with interactive tools.
Find a multitude of DVDs, CDs and publications in print by topic.
These external sites provide more data.
Download extraction tools to help you get the in-depth data you need.
Learn more about our data from this collection of e-tutorials, presentations, webinars and other training materials. Sign up for training sessions.
Explore Census data with interactive visualizations covering a broad range of topics.
Learn how we serve the public as the most reliable source of data about the nation's people and economy.
How we provide the best mix of timeliness, relevancy, quality, and cost for the data we collect.
Our researchers explore innovative ways to conduct surveys, increase respondent participation, reduce costs, and improve accuracy.
Our surveys provide periodic and comprehensive statistics about the nation, critical for government programs, policies, and decisionmaking.
Learn about other opportunities to collaborate with us.
Explore the rich historical background of an organization with roots almost as old as the nation.
Explore prospective positions available at the Census Bureau.
Explore Census programs targeted for particular needs.
Discover the latest in Census Bureau data releases, reports, and events.
The Census Bureau's Director writes on how we measure America's people, places and economy.
Find interesting and quirky statistics regarding national celebrations and major events.
Listen to audio files on fun facts, historical figures, and celebrations of the month.
Find media toolkits, advisories, and all the latest Census news.
See what's coming up in releases and reports.
|2010 Census Population:||3,046,355 (30th)|
|Land Area:||55,857.1 square miles (23rd)|
|Density:||54.5 persons per square mile (36th)|
|Became a State:||December 28, 1846 (29th)|
|Bordering States:||Illinois, Minnesota, Missouri, Nebraska, South Dakota, Wisconsin|
The United States acquired the area of Iowa from France in 1803 as part of the Louisiana Purchase. Iowa Territory was organized on June 12, 1838, from part of Wisconsin Territory; it included all of present-day Iowa, the eastern part of North Dakota and South Dakota, and the western part of Minnesota. Iowa was admitted to the Union on December 28, 1846, as the 29th state with generally the same boundary as the present state. The remaining part of the territory was unattached until the organization of Minnesota Territory in 1849. Nebraska and Iowa have made periodic adjustments to their boundary as the Missouri River has changed its course.
Census data for Iowa are available beginning with the 1840 census. The 1840 population includes the portion of Iowa Territory in present-day Minnesota west of the Mississippi River and a line drawn from its source northward to the Canadian boundary.
AMERICAN INDIAN AREAS
Iowa has four federally recognized American Indian areas. There are three reservations and one trust land.
METROPOLITAN AND MICROPOLITAN STATISTICAL AREAS AND RELATED STATISTICAL AREAS
Iowa has 9 metropolitan statistical areas, 15 micropolitan statistical areas, and 4 combined statistical areas.
There are 99 counties in Iowa. All counties in Iowa are functioning governmental units; each governed by a county board of supervisors.
There are 1,661 county subdivisions in Iowa known as minor civil divisions (MCDs). There are 1,598 townships. There are 59 cities that are independent of any MCD and one city (Tabor) that is partially independent of any MCD creating 62 county subdivisions. There is also one unorganized territory (reservoir property in Polk County).
Iowa township officials have minimal powers and are under the fiscal authority of the county. These townships, by agreement with the state, are classified as nonfunctioning MCDs by the Census Bureau. The governing body for each township is the board of township trustees.
Iowa has 1,009 places; 947 incorporated places and 62 census designated places (CDPs). The incorporated places are all cities. There are 887 incorporated places that are dependent within county subdivisions. Fifty-two cities are legally coextensive with county subdivisions, eight cities are independent of any township, and one city (Tabor) is independent of any township in Fremont County and dependent in Mills County.
CENSUS TRACTS/BLOCK GROUPS/BLOCKS
Iowa has 825 census tracts, 2,630 block groups, and 216,007 census blocks.
For the 111th Congress (January 2011- January 2013) Iowa had five congressional districts. For the 113th Congress (January 2013-January 2015), Iowa has four congressional districts as a result of reapportionment based on the 2010 Census.
Iowa has 364 unified school districts.
STATE LEGISLATIVE DISTRICTS
There are 50 state senate districts and 100 state house districts in Iowa.
Iowa has 99 urban areas; 9 urbanized areas and 90 urban clusters.
ZIP CODE TABULATION AREAS
There are 935 ZIP Code tabulation areas (ZCTAs) in Iowa.
|Year||North Latitude||West Longitude|
|20106||41° 56′ 46″||93° 02′ 12″|
|20006||41° 57′ 37″||93° 02′ 57″|
|19905||41° 58′ 18″||93° 03′ 16″|
|19804||41° 59′ 10″||93° 03′ 30″|
|19703||41° 59′ 46″||93° 05′ 14″|
|19603||41° 59′ 33″||93° 07′ 58″|
|19503||41° 59′ 46″||93° 12′ 44″|
|19402||42° 00′ 08″||93° 16′ 40″|
|19302||41° 59′ 22″||93° 18′ 21″|
|19201||41° 58′ 45″||93° 17′ 43″|
|19101||41° 57′ 43″||93° 15′ 18″|
|19001||41° 55′ 45″||93° 15′ 11″|
|18901||41° 56′ 02″||92° 58′ 43″|
|18801||41° 51′ 40″||92° 56′ 53″|
1 Source: U.S. Department of Commerce, Bureau of the Census, Fourteenth Census of the United States, 1923
2 Source: U.S. Census Bureau, recomputation for historical county level data which relied upon aggregate county level population data with an estimated county centroid resulting in a possible error of up to one mile.
3 Source: U.S. Department of Commerce, Bureau of the Census, Centers of Population for States and Counties, 1974
4 Source: U.S. Census Bureau, Geography Division, recomputation from archived national block group/enumeration area data resulting in a possible error of up to 1,000 feet.
5 Source: U.S. Census Bureau, Geography Division, recomputation from archived national block group data resulting in a possible error of up to 1,000 feet.
6 Source: U.S. Census Bureau, computation from national block-level data
(Persons per square mile)
|County||Polk County||430,640||Kossuth County||972.72||Polk County||750.5|
|- Inc Place||Des Moines city||203,433||Des Moines city||80.87||University Heights city||3,917.0|
|- CDP||Saylorville CDP||3,301||Saylorville CDP||7.04||Park View CDP||2,259.2|
See the Gazetteer Files for a list of geographic entities. See the Metropolitan and Micropolitan Statistical Areas page for a list of metropolitan and micropolitan statistical areas and related statistical areas.