Question: The county in which Helena Valley Southeast, Montana is located had a population of what in 2010?

Context paragraphs:
Lewis and Clark County, Montana: Lewis and Clark County is a county located in the U.S. state of Montana.  As of the 2010 census, the population was 63,395.  Its county seat is Helena, the state capital.  The numerical designation for Lewis and Clark County (used in the issuance of the state's license plates) is 5.  The county was established in 1865 as Edgerton County, and was renamed "Lewis and Clark County" two years later.  The present name was given in honor of explorers Lewis and Clark.

Helena Valley West Central, Montana: Helena Valley West Central is a census-designated place (CDP) in Lewis and Clark County, Montana, United States.  The population was 7,883 at the 2010 census.  It is part of the Helena Micropolitan Statistical Area.

Helena–West Helena, Arkansas: Helena–West Helena is the county seat of and the largest city within Phillips County, Arkansas, United States.  The current city was consolidated, effective January 1, 2006, from the two Arkansas cities of Helena and West Helena.  Helena is sited on lowlands between the Mississippi River and the eastern side of Crowley's Ridge.  West Helena is located on the western side of Crowley's Ridge, a geographic anomaly in the typically flat Arkansas Delta.  The Helena Bridge, one of Arkansas' four Mississippi River bridges, carries U.S. Route 49 across to Mississippi.  The combined population of the two cities was 15,012 at the 2000 census and at the 2010 census, the official population was 12,282.

Helena Valley Southeast, Montana: Helena Valley Southeast is a census-designated place (CDP) in Lewis and Clark County, Montana, United States.  The population was 8,227 at the 2010 census.  It is part of the Helena Micropolitan Statistical Area.

Helena Valley Northeast, Montana: Helena Valley Northeast is a census-designated place (CDP) in Lewis and Clark County, Montana, United States.  The population was 3,470 at the 2010 census.  It is part of the Helena Micropolitan Statistical Area.

Helena Valley Northwest, Montana: Helena Valley Northwest is a census-designated place (CDP) in Lewis and Clark County, Montana, United States.  The population was 3,482 at the 2010 census.  It is part of the Helena Micropolitan Statistical Area.

Lake Helena: Lake Helena is a body of water along Prickly Pear Creek in the Helena Valley of Lewis and Clark County in southwestern Montana.  It is 2073 acre in size and is 3647 ft above sea level.

Spokane Hills: The Spokane Hills, el.  4058 ft , is a set of major foothills of the Big Belt Mountains to the east of Helena, Montana in Lewis and Clark County, Montana.  They lie between the Helena Valley and Canyon Ferry Reservoir.

KYPX (FM): KYPX is an American radio station licensed to Helena Valley Southeast, Montana, serving Helena, Montana.  KYPX is owned and operated by Montana State University Billings, and broadcasts a public radio format from Yellowstone Public Radio.

Kato Makrinou: Kato Makrinou (Greek: Κάτω Μακρινού meaning "Lower Makrinou") is a village in the municipal unit of Makryneia, Aetolia-Acarnania, Greece.  In 2011 its population was 580.  It is located in a valley southeast of Lake Trichonida.  It is 2 km northeast of Makrinou, 10 km southeast of Gavalou and 20 km northwest of Naupactus.

Supporting paragraphs: Helena Valley Southeast, Montana Lewis and Clark County, Montana
Answer: 63,395