- 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
- Aa Junction (Unincorporated)
- Latitude & Longitude: 36°04'47" N, 90°56'23" W
- Elevation: 269
- Civil township: Campbell
- USGS Quad: Walnut Ridge
- Alicia (Town)
- Population: 145 (Change since 1990: -7.6%)
- Located at intersection US 67 and AR 230 near the Jackson County line
- Latitude & Longitude: 35°53'35" N, 91°04'58" W
- Annieville (Unincorporated)
- Located on AR 115 between Smithville and Imboden
- Latitude & Longitude: 36°09'18" N, 91°14'25" W
- Elevation: 610
- Civil township: Annieville
- USGS Quad: Imboden
- Arbor Grove (Unincorporated)
- Located at junction CR 520 and CR 525 southwest of Walnut Ridge
- Latitude & Longitude: 36°01'06" N, 91°02'51" W
- Survey: T. 16 N., R. 1 W., Sec. 24
- Elevation: 254
- Civil township: Lawrence
- USGS Quad: Black Rock
- Bessie (Unincorporated)
- Located southeast of Minturn
- Latitude & Longitude: 35°55'11" N, 90°58'13" W
- Elevation: 255
- Civil township: Dowell
- USGS Quad: Podo Creek
- Map: 1914
- Black Rock (City)
- Population: 717 (Change since 1990: -2.6%)
- Located near US 63 crossing of Black River northwest of Walnut Ridge
- Latitude & Longitude: 36°06'30" N, 91°05'50" W
- Broom (Unincorporated)
- Located somewhere northwest of Alicia
- Latitude & Longitude: 35°55'12" N, 91°07'17" W
- Elevation: 255
- Civil township: Marion
- USGS Quad: Alicia
- Map: 1914
- Calvin (Unincorporated)
- Located on US 67 between Alicia and Minturn
- Latitude & Longitude: 35°55'48" N, 91°03'31" W
- Elevation: 256
- Civil township: Marion
- USGS Quad: Alicia
- Clover Bend (Unincorporated)
- Located near end of AR 228 southwest of Hoxie
- Latitude & Longitude: 35°58'51" N, 91°05'35" W
- Elevation: 247
- Civil township: Lawrence
- USGS Quad: Alicia
- Coffman (Unincorporated)
- Located on CR 511 south of Portia
- Latitude & Longitude: 36°03'49" N, 91°04'42" W
- Survey: T. 17 N., R. 1 W., Sec. 34
- Elevation: 264
- Civil township: Duty
- USGS Quad: Black Rock
- College City (Town)
- Population: 269 (Change since 1990: -20.6%)
- Located just off US 67 north of Walnut Ridge
- Latitude & Longitude: 36°07'31" N, 90°56'21" W
- Denton (Unincorporated)
- Located on AR 117 between Smithville and Powhatan
- Latitude & Longitude: 36°05'43" N, 91°12'28" W
- Elevation: 330
- Civil township: Flat Creek
- USGS Quad: Eaton
- Dicus (Unincorporated)
- Located on AR 34 just northeast of Walnut Ridge
- Latitude & Longitude: 36°05'18" N, 90°55'40" W
- Elevation: 269
- Civil township: Campbell
- USGS Quad: Walnut Ridge
- Driftwood (Unincorporated)
- Located on AR 361 east of Strawberry
- Latitude & Longitude: 35°58'16" N, 91°15'07" W
- Elevation: 272
- Civil township: Morgan
- USGS Quad: Strawberry
- Eaton (Unincorporated)
- Located on AR 25 southwest of Black Rock
- Latitude & Longitude: 36°02'24" N, 91°12'58" W
- Elevation: 300
- Civil township: Eaton
- USGS Quad: Eaton
- Frisbee (Unincorporated)
- Located somewhere southwest of Imboden
- Latitude & Longitude: 36°10'45" N, 91°19'30" W
- Elevation: 660
- Civil township: Spring River
- USGS Quad: Ravenden
- Map: 1914
- Hogan (Unincorporated)
- Latitude & Longitude: 36°09'28" N, 91°07'54" W
- Elevation: 275
- Civil township: Black Rock
- USGS Quad: Imboden
- Hopewell (Unincorporated)
- Located near end of AR 228 very near Clover Bend
- Latitude & Longitude: 35°58'42" N, 91°05'20" W
- Elevation: 249
- Civil township: Lawrence
- USGS Quad: Alicia
- Hoxie (City)
- Population: 2,817 (Change since 1990: +5.3%)
- Located just southwest of Walnut Ridge
- Latitude & Longitude: 36°03'01" N, 90°58'30" W
- Imboden (Town)
- Population: 684 (Change since 1990: +11.0%)
- Located at junction US 62 and US 63
- Latitude & Longitude: 36°12'09" N, 91°10'28" W
- Name origin: Benjamin Imboden
- Founded: 1883
- Jesup (Unincorporated)
- Located near southern intersection of AR 115 and AR 117
- Latitude & Longitude: 36°01'01" N, 91°20'10" W
- Elevation: 300
- Civil township: Jesup
- USGS Quad: Smithville
- Lauratown (Unincorporated)
- Located at intersection CR 511 and CR 520 southwest of Walnut Ridge
- Latitude & Longitude: 36°01'12" N, 91°05'18" W
- Elevation: 260
- Civil township: Lawrence
- USGS Quad: Black Rock
- Lindsey (Unincorporated)
- Located on US 67 just north of Minturn
- Latitude & Longitude: 35°59'27" N, 91°00'59" W
- Elevation: 260
- Civil township: Boas
- USGS Quad: Alicia
- Lynn (Town)
- Population: 315 (Change since 1990: +5.4%)
- Located at intersection AR 25 and AR 361
- Latitude & Longitude: 36°00'26" N, 91°15'08" W
- Minturn (Town)
- Population: 114 (Change since 1990: -8.1%)
- Located at junction US 67 and AR 228 southwest of Hoxie
- Latitude & Longitude: 35°58'28" N, 91°01'39" W
- Murta (Unincorporated)
- Located on AR 34 northeast of Walnut Ridge
- Latitude & Longitude: 36°06'48" N, 90°53'37" W
- Elevation: 274
- Civil township: Campbell
- USGS Quad: Walnut Ridge
- Old Martin Mill Place (Unincorporated)
- Latitude & Longitude: 35°56'24" N, 91°11'53" W
- Elevation: 235
- Civil township: Marion
- USGS Quad: Strangers Home
- Opposition (Unincorporated)
- Located somewhere in the far northern reach of the county
- Latitude & Longitude: 36°13'43" N, 91°17'45" W
- Elevation: 482
- Civil township: Spring River
- USGS Quad: Ravenden
- Map: 1879 McNally
- Ponders (Unincorporated)
- Located on US 63 southeast of Hoxie
- Latitude & Longitude: 36°00'03" N, 90°53'49" W
- Elevation: 260
- Civil township: Promised Land
- USGS Quad: Walnut Ridge
- Portia (Town)
- Population: 483 (Change since 1990: -7.3%)
- Located on US 63 between Black Rock and Hoxie
- Latitude & Longitude: 36°05'11" N, 91°04'02" W
- Powhatan (Town)
- Population: 50 (Change since 1990: -2.0%)
- Located just southwest of Black Rock on AR 25
- Latitude & Longitude: 36°04'56" N, 91°07'06" W
- Ravenden (Town)
- Population: 511 (Change since 1990: +54.8%)
- Located on US 63/US 412 northwest of Imboden
- Latitude & Longitude: 36°13'60" N, 91°15'06" W
- Saffell (Unincorporated)
- Located at southern intersection AR 25 and AR 361 south of Strawberry
- Latitude & Longitude: 35°55'11" N, 91°17'24" W
- Elevation: 280
- Civil township: Reeds Creek
- USGS Quad: Strawberry
- Sedgwick (Town)
- Population: 112 (Change since 1990: +30.2%)
- Located at intersection US 63 and AR 228 between Hoxie and Jonesboro
- Latitude & Longitude: 35°58'40" N, 90°51'50" W
- Sloan (Unincorporated)
- Located between Imboden and Black Rock
- Latitude & Longitude: 36°09'58" N, 91°08'39" W
- Elevation: 270
- Civil township: Dent
- USGS Quad: Imboden
- Map: 1914
- Smithville (Town)
- Population: 73 (Change since 1990: -15.1%)
- Located at northern intersection AR 115 and AR 117 southwest of Imboden
- Latitude & Longitude: 36°04'49" N, 91°18'13" W
- Strangers Home (Unincorporated)
- Located at intersection CR 543 and CR 550 northwest of Alicia
- Latitude & Longitude: 35°55'13" N, 91°07'42" W
- Elevation: 259
- Civil township: Marion
- USGS Quad: Strangers Home
- Strawberry (Town)
- Population: 283 (Change since 1990: +3.7%)
- Located at intersection AR 25, AR 117, and AR 230
- Latitude & Longitude: 35°58'03" N, 91°19'16" W
- Walnut Ridge (City)
- Population: 4,925 (Change since 1990: +12.2%)
- Latitude & Longitude: 36°04'06" N, 90°57'21" W
- Whiskerville (Unincorporated)
- Located at intersection CR 603 and CR 604 in the northeast corner of the county
- Latitude & Longitude: 36°07'11" N, 90°48'47" W
- Elevation: 260
- Civil township: Cache
- USGS Quad: Walnut Ridge SE
Name origin
Named for James Lawrence, a naval captain killed in the War of 1812
| Year | Population | Percent change |
|---|
| 1820 | 5,592 | -- |
| 1830 | 2,806 | -49.8% |
| 1840 | 2,835 | +1.0% |
| 1850 | 5,274 | +86.0% |
| 1860 | 9,372 | +77.7% |
| 1870 | 5,981 | -36.2% |
| 1880 | 8,782 | +46.8% |
| 1890 | 12,984 | +47.8% |
| 1900 | 16,491 | +27.0% |
| 1910 | 20,001 | +21.3% |
| 1920 | 22,098 | +10.5% |
| 1930 | 21,663 | -2.0% |
| 1940 | 22,651 | +4.6% |
| 1950 | 21,303 | -6.0% |
| 1960 | 17,267 | -18.9% |
| 1970 | 16,320 | -5.5% |
| 1980 | 18,447 | +13.0% |
| 1990 | 17,457 | -5.4% |
| 2000 | 17,774 | +1.8% |