Question: What is the population of this town in Frederick County, Maryland, that is to the west of Crampton's Gap Historic District
Context: The Buckeystown Historic District includes the majority of the small town of Buckeystown, Maryland, an unincorporated community located in Frederick County, Maryland, USA.  It is named for George Buckey, a tanner, and his brother, John Buckey, a blacksmith and tavern owner.  Buckeystown is on the U.S National Register of Historic Places and the Maryland Civil War Trail due to its rich history and beautiful examples of Queen Anne and Victorian style houses, along with a small commercial center.  Each historic home has a plaque indicating the year built, the earliest being circa 1780.  There are also several historical information plaques installed along the main street. The Bulls Gap Historic District is located in the town of Bulls Gap in the southeastern corner of Hawkins County in East All Saints Church, or All Saints Episcopal Church, founded in 1742, is a historic Episcopal church now located at 106 West Church Street in the Historic District of Frederick, Maryland.  It is the seat of All Saints Parish, Diocese of Maryland, which covers most of Frederick County, Maryland and once covered most of Western Maryland. The Crampton's Gap Historic District comprises the battlefield where the American Civil War Battle of Crampton's Gap, part of the larger Battle of South Mountain, took place on September 14, 1862.  The district extends on the west to the foot of South Mountain, and to the east of Burkittsville, beyond the eastern foot of the mountain.  The district is characterized by steep mountain terrain in the west and open farmland in the east, with the small town of Burkittsville in the center, which is itself listed as a historic district on the National Register of Historic Places.  The district extends to the south to include Brownsville Gap.  The district includes 98 contributing buildings, 78 of which are in the Burkittsville Historic District.  Crampton's Gap at the crest of the mountain is encompassed by Gathland State Park, which features the War Correspondents Memorial Arch, erected in 1896 to memorialize journalists killed in wartime.  The arch is listed on the National Register as part of Antietam National Battlefield.  The mountainous portions of the district feature numerous stone walls, which were used by both sides for shelter against gunfire during the battle. The Frederick Historic District is a national historic district in Frederick, Frederick County, Maryland.  The district encompasses the core of the city and contains a variety of residential, commercial, ecclesiastical, and industrial buildings dating from the late 18th century to 1941.  Notable are larger detached dwellings in the Queen Anne and American Foursquare architectural styles of the late 19th and early 20th centuries The churches reflect high style architecture ranging from Gothic and Greek Revival to Richardsonian Romanesque and Colonial Revival.  The east side of the district includes the industrial buildings. Thurmont is a town in Frederick County, Maryland, United States.  The population was 6,170 at the 2010 census.  The town is located in the northern part of Frederick County (north of Frederick, Maryland, the county seat), approximately ten miles from the Pennsylvania border, along U.S. Highway 15.  It is very close to Cunningham Falls State Park and Catoctin Mountain Park, which contains the presidential retreat of Camp David.  Thurmont is also home to Catoctin Colorfest, an arts and crafts festival that draws in about 125,000 people each autumn. The Emmitsburg Historic District is a national historic district in Emmitsburg, Frederick County, Maryland.  The district is predominantly residential and includes most of the older area of the town extending along Main Street and Seton Avenue.  Also included are several commercial buildings and churches interspersed among the dwellings.  The buildings are primarily two-story sided log or brick, dating from the late 18th to the mid 19th centuries.  Some later 19th century buildings in this area include some large Italianate-influenced buildings forming the northeast and southeast corners of the main square; an area destroyed by fire in 1863.  Settlement began in the region during the 1730s, bringing Protestant Germans and Scotch-Irish from Pennsylvania, as well as English Catholics from Tidewater Maryland. Fox's Gap, also known as Fox Gap, is a wind gap in the South Mountain Range of the Blue Ridge Mountains, located in Frederick County and Washington County, Maryland.  The gap is traversed by Reno Monument Road.  The Appalachian Trail also crosses the gap. Burkittsville is a town in Frederick County, Maryland, United States.  The population was 151 at the 2010 census. Frederick High School (FHS) is a four-year public high school in Frederick, Maryland, Frederick County, Maryland, United States.  A National Blue Ribbon School of Excellence, Frederick High is the oldest school in Frederick County, the school's diverse population reflects its surrounding dynamic community.
Answer: 151