Jalapa is an unincorporated community and census-designated place (CDP) in Pleasant Township, Grant County, Indiana, United States. As of the 2010 census it had a population of 171.^[4] The site of the Battle of the Mississinewa, fought during the War of 1812, is nearby.^[5]

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Jalapa, Indiana
Census-designated place
Houses on the Frances Slocum Trail at Jalapa
Location of Jalapa in Grant County, Indiana.
Jalapa Show map of Indiana Jalapa Show map of the United States
Coordinates: 40°37′40″N 85°44′44″W
Country	United States
State	Indiana
County	Grant
Township	Pleasant
Area [1]
• Total	0.57 sq mi (1.48 km2)
• Land	0.57 sq mi (1.48 km2)
• Water	0.00 sq mi (0.00 km2)
Elevation [2]	820 ft (250 m)
Population  (2020)
• Total	182
• Density	318.18/sq mi (122.79/km2)
ZIP code	46952
FIPS code	18-37674[3]
GNIS feature ID	2583457[2]

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The first post office in Jalapa, called "Dallas", operated from 1848 until 1849.^[6] The post office was renamed "Jalapa" in 1849, and remained in operation until it was discontinued in 1900.^[7] The community was named after Jalapa, in Mexico.^[6]

Jalapa is located in northwestern Grant County on high ground just southwest of the Mississinewa River, a northwest-flowing tributary of the Wabash River. Jalapa is 7 miles (11 km) northwest of Marion, the Grant County seat.

According to the U.S. Census Bureau, the Jalapa CDP has an area of 3.2 square miles (8.2 km²), all of it land.^[4]