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> 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 
carroll county maryland is located southeast and cumberland county just to the north of adams county. pennsylvania which is the location of the 11th mississippi infantry monument. the monument was established in the year 2000 and is categorised as a contributing property.county county pennsylvania was created in 1800 from part of york county