Johnson City is a city in Blanco County, Texas, United States. The population was 1,656 at the 2010 census. It is the county seat of Blanco County.
Johnson City is located in central Blanco County at 30°16′35″N 98°24′29″W / 30.276427°N 98.408105°W / 30.276427; -98.408105, about 1 mile (2 km) south of the Pedernales River. U.S. Routes 281 and 290 join near the center of town; US 281 leads north 23 miles (37 km) to Marble Falls, and US 290 leads west 30 miles (48 km) to Fredericksburg. The two highways run south out of town together; US 290 soon turns east and leads 47 miles (76 km) to Austin, while US 281 continues south 64 miles (103 km) to San Antonio.
According to the United States Census Bureau, Johnson City has a total area of 1.7 square miles (4.5 km), all land.
As of the census of 2000, there were 1,191 people, 442 households, and 317 families residing in the city. The population density was 891.7 people per square mile (343.2/km). There were 490 housing units at an average density of 366.9 per square mile (141.2/km). The racial makeup of the city was 89.67% White, 0.84% Native American, 0.17% Asian, 8.23% from other races, and 1.09% from two or more races. Hispanic or Latino of any race were 20.57% of the population.
There were 442 households out of which 36.9% had children under the age of 18 living with them, 56.6% were married couples living together, 11.3% had a female householder with no husband present, and 28.1% were non-families. 24.0% of all households were made up of individuals and 12.7% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 3.07.
In the city, the population was spread out with 28.0% under the age of 18, 6.5% from 18 to 24, 27.3% from 25 to 44, 21.2% from 45 to 64, and 17.1% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 88.2 males. For every 100 females age 18 and over, there were 84.5 males.
The median income for a household in the city was $34,148, and the median income for a family was $39,375. Males had a median income of $30,529 versus $21,607 for females. The per capita income for the city was $14,977. About 9.2% of families and 12.5% of the population were below the poverty line, including 17.8% of those under age 18 and 11.8% of those age 65 or over.
Johnson City Texas neighborhoods include: 3232, Countryside, Flat Creek/Rocky Roads, Johnson City, Pedernales River