adams_county,_pennsylvania | has to its southeast | carroll_county,_maryland <tsp> 11th_mississippi_infantry_monument | established | 2000 <tsp> adams_county,_pennsylvania | has to its north | cumberland_county,_pennsylvania <tsp> adams_county,_pennsylvania | has to its southwest | frederick_county,_maryland <tsp> 11th_mississippi_infantry_monument | category | contributing_property <tsp> 11th_mississippi_infantry_monument | location | adams_county,_pennsylvania <sep> adams county is a county in the commonwealth of pennsylvania as of the 2020 census, the population was 103,852 its county seat is gettysburg the county was created on january 22, 1800, from part of york county, and was named for the second president of the united states, john adams on july 1–3, 1863, a crucial battle of the american civil war was fought near gettysburg; adams county as a result is a center of civil war tourism 
the 11th mississippi infantry monument (established in 2000) is located in adams county. pennsylvania and is categorized as a contributing property. cumberland county (also of pennsylvania) lies to the north of adams county. carroll county (to the southeast) and frederick county (to the southwest) and both of maryland are near neighbours to adams county.county county pennsylvania county adams county pennsylvania