- Population: 12,878 (Change since 1990: +13.5%)
- Created: September 14, 1812
- County seat: Vienna
- Largest town: Vienna (Pop. 1,234)
- Name origin: Richard M. Johnson
- Belknap (Village)
- Population: 133 (Change since 1990: +6.4%)
- Located northeast of Karnak and southwest of Vienna
- Latitude & Longitude: 37°19'30" N, 88°56'20" W
- Post office: Apr. 7, 1873 - Now
- Bender (Unincorporated)
- Located along US 45 south of Vienna
- Latitude & Longitude: 37°22'44" N, 88°53'31" W
- Survey: T. 13 S., R. 3 E., Sec. 21
- Elevation: 360
- Civil township: Vienna No. 3
- USGS Quad: Vienna
- Post office: Jul. 16, 1873 - Nov. 5, 1873
- Map: 1876 atlas
- Bloomfield (Unincorporated)
- Located on US 45 north of Vienna
- Latitude & Longitude: 37°27'09" N, 88°52'30" W
- Survey: T. 12 S., R. 3 E., Sec. 27
- Elevation: 410
- Civil township: Bloomfield
- USGS Quad: Bloomfield
- Map: 1876 atlas
- Buncombe (Village)
- Population: 186 (Change since 1990: -10.6%)
- Located on IL 37 north of West Vienna
- Latitude & Longitude: 37°28'17" N, 88°58'37" W
- Post office: Jun. 19, 1871-Now
- Cedar Bluff (Historical)
- Cross Roads (Unincorporated)
- Latitude & Longitude: 37°28'02" N, 88°46'37" W
- Elevation: 430
- Civil township: Simpson
- USGS Quad: Bloomfield
- Maps: 1876 atlas, 1878, and 1883 Tenney
- Cypress (Village)
- Population: 271 (Change since 1990: -1.5%)
- Located on IL 37 east of Dongola
- Latitude & Longitude: 37°21'54" N, 89°01'05" W
- Post office: Nov. 16, 1895 - Now
- Cypress Creek (Historical)
- Located southwest of Vienna
- Latitude & Longitude: 37°22'27" N, 89°01'16" W
- Civil township: Cache
- USGS Quad: Cypress
- Map: 1876 atlas
- Deer Ridge (Unincorporated)
- Latitude & Longitude: 37°34'30" N, 88°56'18" W
- Elevation: 610
- Civil township: Goreville No. 2
- USGS Quad: Goreville
- Eagle Point Bay (Unincorporated)
- Latitude & Longitude: 37°35'22" N, 88°55'47" W
- Elevation: 610
- Civil township: Lake No. 1
- USGS Quad: Goreville
- Egyptian Hills (Unincorporated)
- Latitude & Longitude: 37°35'20" N, 88°53'15" W
- Elevation: 550
- Civil township: Lake No. 2
- USGS Quad: Goreville
- Elvira (Unincorporated)
- Previously known as: Johnson Courthouse
- Located between Lick Creek and Buncombe
- Latitude & Longitude: 37°29'36" N, 89°01'46" W
- Survey: T. 12 S., R. 2 E., Sec. 7
- Elevation: 460
- Civil township: Elvira
- USGS Quad: Mount Pleasant
- Flatwoods (Unincorporated)
- Located between Robbs and Grantsburg
- Latitude & Longitude: 37°25'25" N, 88°43'27" W
- Survey: T. 13 S., R. 4 E., Sec. 1
- Elevation: 526
- Civil township: Grantsburg No. 1
- USGS Quad: Glendale
- Forman (Unincorporated)
- Previously known as: Collinsburg and Ridenhower
- Located northeast of Belknap
- Latitude & Longitude: 37°20'48" N, 88°54'26" W
- Survey: T. 13 S., R. 3 E., Sec. 31
- Elevation: 352
- Civil township: Belknap
- USGS Quad: Karnak
- Map: 1876 atlas
- Ganntown (Unincorporated)
- Located southwest of Grantsburg
- Latitude & Longitude: 37°21'48" N, 88°47'03" W
- Survey: T. 13 S., R. 4 E.
- Elevation: 560
- Civil township: Grantsburg No. 2
- USGS Quad: Mermet
- Goreville (Village)
- Population: 938 (Change since 1990: +7.6%)
- Located on IL 37 north of Buncombe
- Latitude & Longitude: 37°33'16" N, 88°58'20" W
- Post office: Jun. 13, 1866 - Now
- Grantsburg (Unincorporated)
- Located on IL 146 at the crossing over Bay Creek
- Latitude & Longitude: 37°23'27" N, 88°44'49" W
- Survey: T. 13 S., R. 4 E., Sec. 14-15
- Elevation: 365
- Civil township: Grantsburg No. 1
- USGS Quad: Glendale
- Joppa Junction (Unincorporated)
- Located west of Belknap near White Hill
- Latitude & Longitude: 37°19'47" N, 89°01'53" W
- Survey: T. 14 S., R. 2 E., Sec. 6
- Elevation: 345
- Civil township: Cache
- USGS Quad: Cypress
- Lincoln Green (Historical)
- Previously known as: Gray's Mill
- Located northwest of Belknap
- Latitude & Longitude: 37°19'42" N, 88°59'50" W
- Civil township: Belknap
- USGS Quad: Karnak (Not shown)
- Maps: 1876 atlas and 1878
- New Burnside (Village)
- Population: 242 (Change since 1990: -6.6%)
- Located near the intersection of US 45 and IL 166
- Latitude & Longitude: 37°34'45" N, 88°46'15" W
- Post office: Dec. 16, 1872 - Jan. 22, 1873 (Morrel); Jan. 22, 1873 - Now (New Burnside)
- Omar (Unincorporated)
- Latitude & Longitude: 37°30'06" N, 88°58'07" W
- Elevation: 596
- Civil township: Elvira
- USGS Quad: Goreville
- Ozark (Unincorporated)
- Located southeast of New Burnside
- Latitude & Longitude: 37°32'33" N, 88°45'46" W
- Survey: T. 11 S., R. 4 E., Sec. 22
- Elevation: 696
- Civil township: Ozark
- USGS Quad: Creal Springs
- Post office: Jan. 24, 1889 - Now
- Parker (Unincorporated)
- Located southwest of New Burnside
- Latitude & Longitude: 37°34'13" N, 88°47'60" W
- Survey: T. 11 S., R. 4 E., Sec. 17
- Elevation: 547
- Civil township: Burnside
- USGS Quad: Creal Springs
- Pharoahs Gardens (Unincorporated)
- Latitude & Longitude: 37°35'34" N, 88°54'34" W
- Elevation: 570
- Civil township: Lake No. 2
- USGS Quad: Goreville
- Pleasant Grove (Unincorporated)
- Located on IL 146 east of Mount Pleasant
- Latitude & Longitude: 37°26'27" N, 89°01'47" W
- Survey: T. 12 S., R. 2 E., Sec. 30
- Elevation: 440
- Civil township: Elvira
- USGS Quad: Mount Pleasant
- Pond (Unincorporated)
- Located northeast of Vienna
- Latitude & Longitude: 37°26'42" N, 88°49'58" W
- Survey: T. 12 S., R. 3 E.
- Elevation: 528
- Civil township: Bloomfield
- USGS Quad: Bloomfield
- Reevesville (Unincorporated)
- Located southeast of Grantsburg
- Latitude & Longitude: 37°20'35" N, 88°43'11" W
- Survey: T. 13 S., R. 4 E., Sec. 36
- Elevation: 350
- Civil township: Grantsburg No. 2
- USGS Quad: Reevesville
- Reynoldsburg (Unincorporated)
- Located east of Tunnel Hill
- Latitude & Longitude: 37°30'55" N, 88°46'33" W
- Survey: T. 11 S., R. 4 E., Sec. 33
- Elevation: 580
- Civil township: Ozark
- USGS Quad: Creal Springs
- Map: 1876 atlas
- Robinwood (Unincorporated)
- Latitude & Longitude: 37°34'39" N, 88°54'33" W
- Elevation: 570
- Civil township: Tunnel Hill
- USGS Quad: Goreville
- Sandburn (Unincorporated)
- Located south of Tunnel Hill
- Latitude & Longitude: 37°30'33" N, 88°50'32" W
- Survey: T. 12 S., R. 3 E., Sec. 2
- Elevation: 620
- Civil township: Bloomfield
- USGS Quad: Creal Springs
- Post office: Jul. 3, 1869 - Jun. 15, 1917
- Maps: 1876 atlas (Sanburn or South Tunnel Hill) and 1878 (Sanburn)
- Scanlin Spur (Historical)
- Located along the railroad somewhere northwest of Forman
- Latitude & Longitude: 37°21'59" N, 88°56'48" W
- Civil township: Cache
- USGS Quad: Karnak (Not shown)
- Simpson (Village)
- Population: 54 (Change since 1990: -11.5%)
- Located west of Robbs and northeast of Vienna
- Latitude & Longitude: 37°28'02" N, 88°45'18" W
- Post office: Mar. 1, 1871 - Now
- Sugar Creek Ranch (Unincorporated)
- Latitude & Longitude: 37°34'20" N, 88°55'38" W
- Elevation: 600
- Civil township: Tunnel Hill
- USGS Quad: Goreville
- Tunnel Hill (Unincorporated)
- Located southwest of New Burnside just off US 45
- Latitude & Longitude: 37°31'25" N, 88°50'19" W
- Survey: T. 11 S., R. 3 E., Sec. 35
- Elevation: 650
- Civil township: Tunnel Hill
- USGS Quad: Creal Springs
- Post office: Feb. 28, 1873 - Now
- Map: 1876 atlas
- Vienna (City)
- Population: 1,234 (Change since 1990: -14.7%)
- Located at intersection US 45 and IL 146
- Latitude & Longitude: 37°24'55" N, 88°53'52" W
- Wagon Creek Heaven (Unincorporated)
- Latitude & Longitude: 37°34'59" N, 88°53'51" W
- Elevation: 550
- Civil township: Tunnel Hill
- USGS Quad: Goreville
- Wartrace (Unincorporated)
- Latitude & Longitude: 37°23'57" N, 88°46'43" W
- Elevation: 495
- Civil township: Grantsburg No. 1
- USGS Quad: Bloomfield
- West Vienna (Unincorporated)
- Alternate name: Boles
- Located at intersection IL 37 and IL 146
- Latitude & Longitude: 37°25'43" N, 88°58'10" W
- Survey: T. 13 S., R. 2 E.
- Elevation: 400
- Civil township: Elvira
- USGS Quad: Vienna
- White Hill (Unincorporated)
- Alternate name: Chasco
- Located on IL 37 south of Cypress
- Latitude & Longitude: 37°19'09" N, 89°01'17" W
- Survey: T. 14 S., R. 2 E., Sec. 5
- Elevation: 350
- Civil township: Cache
- USGS Quad: Cypress
Name origin
Named for Richard M. Johnson, a Colonel in the Kentucky
militia who served in the Indian wars and the War of 1812.
Later U.S. Vice President from 1837 to 1841.
| Year | Population | Percent change |
|---|
| 1820 | 843 | -- |
| 1830 | 1,596 | +89.3% |
| 1840 | 3,626 | +127.2% |
| 1850 | 4,114 | +13.5% |
| 1860 | 9,333 | +126.9% |
| 1870 | 11,248 | +20.5% |
| 1880 | 13,078 | +16.3% |
| 1890 | 15,013 | +14.8% |
| 1900 | 15,667 | +4.4% |
| 1910 | 14,331 | -8.5% |
| 1920 | 12,022 | -16.1% |
| 1930 | 10,203 | -15.1% |
| 1940 | 10,727 | +5.1% |
| 1950 | 8,729 | -18.6% |
| 1960 | 6,928 | -20.6% |
| 1970 | 7,550 | +9.0% |
| 1980 | 9,624 | +27.5% |
| 1990 | 11,347 | +17.9% |
| 2000 | 12,878 | +13.5% |