States101 
Iowa
State Facts
There are fewer men than woman in Iowa. The overall gender ratio is 99 men to 100 women.
The Iowa flag was adopted on March 12, 1921. The flag has been ranked the 29th best U.S. flag by a leading Vexillology Organization.
The Iowa quarter was the 29th quarter released overall. The quarter was released on August 30, 2004.
Recent estimates put Iowa's population at around 3,107,000 people (31st out of 56).The population density is 55.6 people per square mile (41st out of 56).
Someone from Iowa is known as a Iowan. View our List of Adjectival and Demonyms for all the States.
Iowa was the 29th state when it joined the United States on December 28, 1846. Prior to 1846, Iowa was known as "Iowa Territory."
Essential Iowa Facts
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IA
Postal Code
The Iowa postal code is IA. This abbreviation has been used since the USPS first established official codes in October 1963. -
Gender Ratio
Gender Ratio: 99 Men to 100 Women
Male Population: 1,543,045 men
Female Population: 1,564,081 women
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State Flag
The 4 main colors in the Iowa flag are #FFFFFF, #0A1F62, #D90026, and #A54A00 -
State Quarter
The Iowa Quarter was released in August 08, 2004.
Total Mintage: 0.47 billion.
Engraver: John Mercanti -
Population and Area
Population: 3,107,126 people
Land Area: 55,857 square miles
Population Density: 3,107,126 people per square mile
Areas Codes in Iowa (9)
- 319
- 402
- 507
- 515
- 563
- 605
- 641
- 660
- 712
Iowa Counties (99)
| County | Top Cities |
|---|---|
| Adair County | Bridgewater, Fontanelle, Greenfield, Orient, and Stuart |
| Adams County | Carbon, Corning, Nodaway, and Prescott |
| Allamakee County | Dorchester, Harpers Ferry, Lansing, New Albin, Postville, and Waterville |
| Appanoose County | Centerville, Cincinnati, Exline, Moravia, Moulton, and Mystic |
| Audubon County | Audubon, Brayton, Exira, Gray, Hamlin, and Kimballton |
| Benton County | Atkins, Belle Plaine, Blairstown, Garrison, Keystone, and Luzerne |
| Black Hawk County | Cedar Falls, Dewar, Dunkerton, Evansdale, Gilbertville, and Hudson |
| Boone County | Beaver, Boone, Boxholm, Luther, Madrid, and Ogden |
| Bremer County | Denver, Frederika, Janesville, Plainfield, Readlyn, and Sumner |
| Buchanan County | Aurora, Brandon, Fairbank, Hazleton, Independence, and Lamont |
| Buena Vista County | Albert City, Alta, Linn Grove, Marathon, Newell, and Rembrandt |
| Butler County | Allison, Aplington, Aredale, Austinville, Bristow, and Clarksville |
| Calhoun County | Farnhamville, Jolley, Knierim, Lake City, Lohrville, and Lytton |
| Carroll County | Arcadia, Breda, Carroll, Coon Rapids, Dedham, and Glidden |
| Cass County | Anita, Atlantic, Cumberland, Griswold, Lewis, and Marne |
| Cedar County | Bennett, Clarence, Durant, Lowden, Mechanicsville, and Stanwood |
| Cerro Gordo County | Clear Lake, Dougherty, Mason City, Meservey, Plymouth, and Rock Falls |
| Cherokee County | Aurelia, Cherokee, Cleghorn, Larrabee, Marcus, and Meriden |
| Chickasaw County | Alta Vista, Fredericksburg, Ionia, Lawler, Nashua, and New Hampton |
| Clarke County | Murray, Osceola, and Woodburn |
| Clay County | Dickens, Everly, Fostoria, Gillett Grove, Greenville, and Peterson |
| Clayton County | Colesburg, Edgewood, Elkader, Elkport, Farmersburg, and Garber |
| Clinton County | Andover, Bryant, Calamus, Camanche, Charlotte, and Clinton |
| Crawford County | Arion, Aspinwall, Charter Oak, Deloit, Denison, and Dow City |
| Dallas County | Adel, Booneville, Bouton, Dallas Center, Dawson, and De Soto |
| Davis County | Bloomfield, Drakesville, Floris, and Pulaski |
| Decatur County | Davis City, Decatur, Garden Grove, Grand River, Lamoni, and Leon |
| Delaware County | Delaware, Delhi, Dundee, Earlville, Greeley, and Hopkinton |
| Des Moines County | Burlington, Danville, Mediapolis, Middletown, Sperry, and West Burlington |
| Dickinson County | Arnolds Park, Lake Park, Milford, Okoboji, Spirit Lake, and Superior |
| Dubuque County | Dubuque, Durango, Dyersville, Epworth, Farley, and Holy Cross |
| Emmet County | Armstrong, Dolliver, Estherville, Ringsted, and Wallingford |
| Fayette County | Arlington, Clermont, Elgin, Fayette, Hawkeye, and Maynard |
| Floyd County | Charles City, Colwell, Floyd, Marble Rock, Nora Springs, and Rockford |
| Franklin County | Ackley, Alexander, Bradford, Chapin, Coulter, and Geneva |
| Fremont County | Farragut, Hamburg, Imogene, Percival, Randolph, and Riverton |
| Greene County | Churdan, Cooper, Dana, Grand Junction, Jefferson, and Paton |
| Grundy County | Beaman, Conrad, Dike, Grundy Center, Holland, and Morrison |
| Guthrie County | Adair, Bagley, Bayard, Casey, Guthrie Center, and Jamaica |
| Hamilton County | Blairsburg, Ellsworth, Jewell, Kamrar, Randall, and Stanhope |
| Hancock County | Britt, Corwith, Crystal Lake, Garner, Goodell, and Kanawha |
| Hardin County | Alden, Buckeye, Eldora, Garden City, Gifford, and Hubbard |
| Harrison County | Dunlap, Little Sioux, Logan, Magnolia, Missouri Valley, and Modale |
| Henry County | Hillsboro, Mount Pleasant, Mount Union, New London, Olds, and Rome |
| Howard County | Chester, Cresco, Elma, Lime Springs, Protivin, and Riceville |
| Humboldt County | Bode, Bradgate, Dakota City, Gilmore City, Hardy, and Humboldt |
| Ida County | Arthur, Battle Creek, Galva, Holstein, and Ida Grove |
| Iowa County | Amana, Conroy, Homestead, Ladora, Marengo, and Middle Amana |
| Jackson County | Andrew, Baldwin, Bellevue, Bernard, La Motte, and Maquoketa |
| Jasper County | Baxter, Colfax, Ira, Kellogg, Killduff, and Lynnville |
| Jefferson County | Batavia, Brighton, Fairfield, Libertyville, Lockridge, and Packwood |
| Johnson County | Coralville, Hills, Iowa City, Lone Tree, North Liberty, and Oxford |
| Jones County | Anamosa, Cascade, Center Junction, Langworthy, Martelle, and Monticello |
| Keokuk County | Delta, Gibson, Harper, Hayesville, Hedrick, and Keswick |
| Kossuth County | Algona, Bancroft, Burt, Fenton, Lakota, and Ledyard |
| Lee County | Argyle, Denmark, Donnellson, Fort Madison, Houghton, and Keokuk |
| Linn County | Alburnett, Cedar Rapids, Center Point, Central City, Coggon, and Ely |
| Louisa County | Columbus City, Columbus Junction, Grandview, Morning Sun, Oakville, and Wapello |
| Lucas County | Chariton, Derby, Lucas, Russell, and Williamson |
| Lyon County | Alvord, Doon, George, Inwood, Larchwood, and Lester |
| Madison County | Earlham, Macksburg, Patterson, Peru, Saint Charles, and Truro |
| Mahaska County | Barnes City, Beacon, Cedar, Fremont, Leighton, and New Sharon |
| Marion County | Bussey, Columbia, Hamilton, Harvey, Knoxville, and Melcher-dallas |
| Marshall County | Albion, Clemons, Ferguson, Gilman, Haverhill, and Laurel |
| Mills County | Emerson, Glenwood, Hastings, Henderson, Malvern, and Mineola |
| Mitchell County | Carpenter, Little Cedar, Mc Intire, Orchard, Osage, and Saint Ansgar |
| Monona County | Blencoe, Castana, Mapleton, Moorhead, Onawa, and Rodney |
| Monroe County | Albia, Lovilia, and Melrose |
| Montgomery County | Elliott, Grant, Red Oak, Stanton, and Villisca |
| Muscatine County | Atalissa, Conesville, Fruitland, Letts, Montpelier, and Moscow |
| O'Brien County | Archer, Calumet, Hartley, Paullina, Primghar, and Sanborn |
| Osceola County | Ashton, Harris, Melvin, Ocheyedan, and Sibley |
| Page County | Blanchard, Braddyville, Clarinda, Coin, College Springs, and Essex |
| Palo Alto County | Ayrshire, Curlew, Cylinder, Emmetsburg, Graettinger, and Mallard |
| Plymouth County | Akron, Brunsville, Hinton, Kingsley, Le Mars, and Merrill |
| Pocahontas County | Fonda, Havelock, Laurens, Palmer, Plover, and Pocahontas |
| Polk County | Alleman, Altoona, Ankeny, Berwick, Bondurant, and Clive |
| Pottawattamie County | Avoca, Carson, Carter Lake, Council Bluffs, Crescent, and Hancock |
| Poweshiek County | Brooklyn, Deep River, Grinnell, Guernsey, Hartwick, and Malcom |
| Ringgold County | Benton, Diagonal, Ellston, Kellerton, Mount Ayr, and Redding |
| Sac County | Auburn, Early, Lake View, Nemaha, Odebolt, and Sac City |
| Scott County | Bettendorf, Blue Grass, Buffalo, Davenport, Dixon, and Donahue |
| Shelby County | Defiance, Earling, Elk Horn, Harlan, Irwin, and Kirkman |
| Sioux County | Alton, Boyden, Chatsworth, Granville, Hawarden, and Hospers |
| Story County | Ames, Cambridge, Collins, Colo, Gilbert, and Huxley |
| Tama County | Buckingham, Chelsea, Clutier, Dysart, Elberon, and Garwin |
| Taylor County | Bedford, Blockton, Clearfield, Gravity, Lenox, and New Market |
| Union County | Afton, Arispe, Creston, Cromwell, Lorimor, and Shannon City |
| Van Buren County | Birmingham, Bonaparte, Cantril, Douds, Farmington, and Keosauqua |
| Wapello County | Agency, Blakesburg, Chillicothe, Eddyville, Eldon, and Kirkville |
| Warren County | Ackworth, Bevington, Carlisle, Cumming, Des Moines, and Hartford |
| Washington County | Ainsworth, Crawfordsville, Kalona, Keota, Riverside, and Washington |
| Wayne County | Allerton, Clio, Corydon, Humeston, Lineville, and Millerton |
| Webster County | Badger, Barnum, Burnside, Callender, Clare, and Dayton |
| Winnebago County | Buffalo Center, Forest City, Lake Mills, Leland, Rake, and Scarville |
| Winneshiek County | Calmar, Castalia, Decorah, Fort Atkinson, Highlandville, and Ossian |
| Woodbury County | Anthon, Bronson, Climbing Hill, Correctionville, Cushing, and Danbury |
| Worth County | Fertile, Grafton, Hanlontown, Joice, Kensett, and Manly |
| Wright County | Belmond, Clarion, Dows, Eagle Grove, Galt, and Goldfield |