{{Infobox settlement |official_name = Marion Township,
Butler County,
Pennsylvania |settlement_type = Township |nickname = |motto = |image_skyline = |imagesize = |image_caption = |image_flag = |image_seal = |image_map = Map of Marion Township, Butler County, Pennsylvania Highlighted.png |mapsize = 250px |map_caption = Map of Butler County, Pennsylvania highlighting Marion Township |image_map1 = Map of Pennsylvania highlighting Butler County.svg |mapsize1 = 250px |map_caption1 = Map of Butler County, Pennsylvania |subdivision_type = Country |subdivision_name = United States |subdivision_type1 = State |subdivision_name1 = Pennsylvania |subdivision_type2 = County |subdivision_name2 = Butler |government_footnotes = |government_type = |leader_title = |leader_name = |leader_title1 = |leader_name1 = |leader_title2 = |leader_name2 = |established_title = Settled |established_date = 1800 |established_title1 = Incorporated |established_date1 = 1854 |unit_pref = Imperial |area_footnotes = |area_magnitude = |area_total_km2 = 65.9 |area_land_km2 = 65.9 |area_water_km2 = 0.0 |area_total_sq_mi = |area_land_sq_mi = |area_water_sq_mi = |population_as_of = 2010 |population_footnotes = |population_total = 1239 |population_density_km2 = 18.8 |population_density_sq_mi = |timezone = Eastern (EST) |utc_offset = -5 |timezone_DST = EDT |utc_offset_DST = -4 |postal_code_type = |postal_code = |area_code = |website = mariontwp.com