- Population: 2,673,400 (Change since 1990: +13.7%)
- Statehood: March 2, 1819
- Capital city: Little Rock
- Highest point: Magazine Mountain, 2753 ft.
- Lowest point: Near Felsenthal, 54 ft.
- Clay County
- Population: 17,609 (Change since 1990: -2.8%)
- Created: March 24, 1873
- County seat: Corning;Piggott
- Largest town: Piggott (Pop. 3,894)
- Name origin: Henry Clay
- Craighead County
- Population: 82,148 (Change since 1990: +19.1%)
- Created: February 19, 1859
- County seat: Jonesboro
- Largest town: Jonesboro (Pop. 55,515)
- Name origin: Thomas B. Craighead
- Greene County
- Population: 37,331 (Change since 1990: +17.4%)
- Created: November 5, 1833
- County seat: Paragould
- Largest town: Paragould (Pop. 22,017)
- Name origin: Nathaniel Greene
- Lawrence County
- Population: 17,774 (Change since 1990: +1.8%)
- Created: January 15, 1815
- County seat: Walnut Ridge
- Largest town: Walnut Ridge (Pop. 4,925)
- Name origin: James Lawrence
- Mississippi County
- Population: 51,979 (Change since 1990: -9.6%)
- Created: November 1, 1833
- County seat: Blytheville;Osceola
- Largest town: Blytheville (Pop. 18,272)
- Name origin: Mississippi River
- Randolph County
- Population: 18,195 (Change since 1990: +9.9%)
- Created: October 29, 1835
- County seat: Pocahontas
- Largest town: Pocahontas (Pop. 6,518)
- Name origin: John Randolph
Timeline
- Mar. 2, 1819
- Arkanas Territory detached from Missouri Territory
- Jun. 15, 1836
- Arkansas officially admitted as the 25th state
- May 6, 1861
- Arkansas joins the Confederacy
- Jun. 22, 1868
- Union officially re-admits Arkansas
- Oct. 13, 1874
- New constitution adopted
| Year | Population | Percent change |
|---|
| 1810 | 1,062 | -- |
| 1820 | 14,255 | +1242.3% |
| 1830 | 30,388 | +113.2% |
| 1840 | 97,574 | +221.1% |
| 1850 | 209,897 | +115.1% |
| 1860 | 435,450 | +107.5% |
| 1870 | 484,471 | +11.3% |
| 1880 | 802,525 | +65.6% |
| 1890 | 1,128,179 | +40.6% |
| 1900 | 1,311,564 | +16.3% |
| 1910 | 1,574,449 | +20.0% |
| 1920 | 1,752,204 | +11.3% |
| 1930 | 1,854,482 | +5.8% |
| 1940 | 1,949,387 | +5.1% |
| 1950 | 1,909,511 | -2.0% |
| 1960 | 1,786,272 | -6.5% |
| 1970 | 1,923,322 | +7.7% |
| 1980 | 2,286,357 | +18.9% |
| 1990 | 2,350,725 | +2.8% |
| 2000 | 2,673,400 | +13.7% |