thumb|upright|Navarro Ranch Texas Historical Marker south of Geronimo
Geronimo is an unincorporated community and census-designated place (CDP) in Guadalupe County, Texas, United States. The population was 1,097 at the 2020 census, up from 1,032 at the 2010 census. It is part of the San Antonio metropolitan area.
History
In 1831 during the Mexican Texas period, James Bowie surveyed eleven leagues of land within the colony of Green DeWitt. Located on the northeast bank of the Guadalupe River, the area surrounded the natural springs called "Tio Geronimo". José Antonio Navarro purchased land and lived here later, 1840–1853. As a champion of human rights, he was a signer of the Texas Declaration of Independence, the Constitution of the Republic of Texas, and the Constitution of the State of Texas.
Navarro lived here on his San Geronimo Ranch. It was located on Geronimo Creek and named for Saint Jerome (translator of the Bible into Latin). The town and creek are named to honor this saint, although others claim that the name comes from original owner of the springs, "Tio" (Uncle) Geronimo Flores. José Antonio Navarro's brother, Luciano Navarro, also ran a ranch in the area. The area is about north of Seguin, the Guadalupe County seat.
In the mid-1800s, Geronimo became popular as a social center for German settlers. German settlers from Schumansville moved into the area in 1860 and formed a community. One enterprising settler opened a bank and German civic center. The community had grown into a small town by 1891, sporting a general store, a post office (former bank), a steam-powered cotton gin, and a population of twenty. A one-teacher school brought education to forty students in 1904. By 1917, the post office had relocated, sharing occupancy with a local feed store. In 1919, a park, complete with a spring-fed swimming pool, was constructed beside Geronimo Creek. After World War II, Geronimo hosted two gins and 123 residents.
Geography
Geronimo is located in northern Guadalupe County along Texas State Highway 123, which leads north to San Marcos and south to Seguin, the Guadalupe County seat. New Braunfels is to the west via Farm-to-Market Roads.
According to the United States Census Bureau, the Geronimo CDP has a total area of , all land.<br> 1850–1900 1910<br> 1920 1930 1940<br>
1950 1960 1970<br> 1980 1990 2000<br> 2010 2020
Geronimo first appeared as a census designated place in the 2000 U.S. census.
!Pop 2010
!style="background-color: #ffffb3;" |Pop 2020
!% 2000
!% 2010
!style="background-color: #ffffb3;" |% 2020
|-
|White alone (NH)
|320
|468
|style='background: #ffffe6; |490
|51.70%
|45.35%
|style='background: #ffffe6; |44.67%
|-
|Black or African American alone (NH)
|26
|31
|style='background: #ffffe6; |28
|4.20%
|3.00%
|style='background: #ffffe6; |2.55%
|-
|Native American or Alaska Native alone (NH)
|0
|0
|style='background: #ffffe6; |5
|0.00%
|0.00%
|style='background: #ffffe6; |0.46%
|-
|Asian alone (NH)
|0
|7
|style='background: #ffffe6; |0
|0.00%
|0.68%
|style='background: #ffffe6; |0.00%
|-
|Native Hawaiian or Pacific Islander alone (NH)
|0
|0
|style='background: #ffffe6; |1
|0.00%
|0.00%
|style='background: #ffffe6; |0.09%
|-
|Other race alone (NH)
|5
|1
|style='background: #ffffe6; |2
|0.81%
|0.10%
|style='background: #ffffe6; |0.18%
|-
|Mixed race or Multiracial (NH)
|7
|2
|style='background: #ffffe6; |30
|1.13%
|0.19%
|style='background: #ffffe6; |2.73%
|-
|Hispanic or Latino (any race)
|261
|523
|style='background: #ffffe6; |541
|42.16%
|50.68%
|style='background: #ffffe6; |49.32%
|-
|Total
|619
|1,032
|style='background: #ffffe6; |1,097
|100.00%
|100.00%
|style='background: #ffffe6; |100.00%
|}
2000 census
As of the census
