|— Town —|
|• Total||1.28 sq mi (3.32 km2)|
|• Land||1.24 sq mi (3.21 km2)|
|• Water||0.04 sq mi (0.10 km2)|
|Elevation||771 ft (235 m)|
|• Estimate (2011)||930|
|• Density||750.0/sq mi (289.6/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||0440849|
The Confederate Army led by Brigadier General John Hunt Morgan camped in Palmyra on the night of July 9, 1863 after the Battle of Corydon. The army took ransoms from the businesses and commandeered all the towns horses for the Confederate cavalry. The army left the town on the morning of July 10, 1863 and riding north towards Salem. The town had two previous names: McClellan's Crossroad and Carthage.
Palmyra is located at .(38.407458, -86.110636)
According to the 2010 census, the town has a total area of 1.28 square miles (3.3 km2), of which 1.24 square miles (3.2 km2) (or 96.88%) is land and 0.04 square miles (0.10 km2) (or 3.12%) is water.
Palmrya has a three member Town Council and a Clerk Treasurer. The current members of the board are Alvin Brown, Paul Eveslage, and Virginia Kirkham. The Clerk-Treasurer is Tiffany Cardwell. The President of the Town Board was Alvin Brown from 2008-2010. He previously served as a Harrison County Councilman for 16 years. Virginia Kirkham was elected Board President for 2011. All members will have to run for another term in November 2011.
November 2012 Virginia Kirkham, Paul Eveslage, Treasurer Tiffany Cardwell and former Town Manager Cheri Banet were indicted on Felony charges of welfare fraud and official misconduct. 
 2010 census
As of the census of 2010, there were 930 people, 388 households, and 261 families residing in the town. The population density was 750.0 inhabitants per square mile (289.6 /km2). There were 423 housing units at an average density of 341.1 per square mile (131.7 /km2). The racial makeup of the town was 96.1% White, 0.1% African American, 0.2% Native American, 1.6% Asian, and 1.9% from two or more races. Hispanic or Latino of any race were 1.0% of the population.
There were 388 households out of which 35.6% had children under the age of 18 living with them, 48.7% were married couples living together, 12.6% had a female householder with no husband present, 5.9% had a male householder with no wife present, and 32.7% were non-families. 28.1% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.90.
The median age in the town was 37.4 years. 24.2% of residents were under the age of 18; 9.4% were between the ages of 18 and 24; 27.2% were from 25 to 44; 24.7% were from 45 to 64; and 14.4% were 65 years of age or older. The gender makeup of the town was 48.0% male and 52.0% female.
 2000 census
As of the census of 2000, there were 633 people, 238 households, and 169 families residing in the town. The population density was 682.5 people per square mile (262.8/km²). There were 253 housing units at an average density of 272.8 per square mile (105.0/km²). The racial makeup of the town was 98.42% White, 0.16% Asian, and 1.42% from two or more races.
There were 238 households out of which 36.1% had children under the age of 18 living with them, 59.2% were married couples living together, 8.8% had a female householder with no husband present, and 28.6% were non-families. 23.1% of all households were made up of individuals and 10.5% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.12.
In the town the population was spread out with 26.9% under the age of 18, 8.4% from 18 to 24, 31.6% from 25 to 44, 19.3% from 45 to 64, and 13.9% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 95.4 males. For every 100 females age 18 and over, there were 96.2 males.
The median income for a household in the town was $36,964, and the median income for a family was $42,083. Males had a median income of $30,000 versus $22,321 for females. The per capita income for the town was $15,114. About 4.7% of families and 7.8% of the population were below the poverty line, including 4.5% of those under age 18 and 6.7% of those age 65 or over.
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2012-12-11.
- "American FactFinder". United States Census Bureau. Retrieved 2012-12-11.
- "Population Estimates". United States Census Bureau. Retrieved 2013-01-02.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "2010 Census U.S. Gazetteer Files for Places – Indiana". United States Census. Retrieved 2012-04-21.