Question: What was the 2010 population of the second-most-populated census-designated place in Maui?

Context paragraphs:
Makena, Hawaii: Makena is a census-designated place (CDP) in Maui County, Hawaiʻ i, United States.  As of the 2010 census, it had a population of 99.  Prior to 2010, the area was part of the Wailea-Makena census-designated place.

Maui: The island of Maui ( ; Hawaiian: ] ) is the second-largest of the Hawaiian Islands at 727.2 square miles (1,883 km) and is the 17th-largest island in the United States.  Maui is part of the State of Hawaii and is the largest of Maui County's four islands, which include Molokaʻ i, Lānaʻ i, and unpopulated Kahoʻ olawe.  In 2010, Maui had a population of 144,444, third-highest of the Hawaiian Islands, behind that of Oʻ ahu and Hawaiʻ i Island.  Kahului is the largest census-designated place (CDP) on the island with a population of 26,337 as of 2010 and is the commercial and financial hub of the island.  Wailuku is the seat of Maui County and is the third-largest CDP as of 2010 .  Other significant places include Kīhei (including Wailea and Makena in the Kihei Town CDP, the island's second-most-populated CDP), Lahaina (including Kāʻ anapali and Kapalua in the Lahaina Town CDP), Makawao, Pukalani, Pāʻ ia, Kula, Haʻ ikū, and Hāna.

Pukalani, Hawaii: Pukalani is a census-designated place (CDP) in Maui County, Hawaiʻ i, United States.  The population was 7,574 at the 2010 census.  The general volcano-slope region, including nearby Makawao and Kula, is referred to as upcountry by locals, and is one of the four major population centers on Maui, the other three being Kahului, Lahaina and Kīhei, all of which are at sea level.

Garden City, South Carolina: Garden City, sometimes known as Garden City Beach, is a census-designated place (CDP) in Horry County, South Carolina, United States.  While Garden City is sometimes considered to be a city it is not incorporated and does not yet have a city council or mayor.  The population was 9,357 at the 2000 census and the 2010 population estimate is around 11,014.  Garden City Beach is located directly south of Surfside Beach and ends on a peninsula at the mouth of Murrells Inlet.

Allyn-Grapeview, Washington: Allyn-Grapeview is a former census-designated place (CDP) in Mason County, Washington, United States.  At the 2010 census, the CDP was separated into Allyn and Grapeview.  The combined 2010 population of the two new CDPs was 2,917.  The community-based monthly newspaper called the "North Bay Review", services the Allyn-Grapeview area.  Allyn's main road and thoroughfare is State Route 3 with Grapeview connected to Route 3 via Grapeview Loop Road.

Kahului, Hawaii: Kahului is a census-designated place (CDP) in Maui County, on the island of Maui, in the U.S. state of Hawaii.  Kahului hosts Maui's main airport (Kahului Airport), deep-draft harbor, light industrial areas, and commercial shopping centers.  The population was 26,337 at the 2010 census.

Kihei, Hawaii: Kīhei is a census-designated place (CDP) in Maui County, Hawaiʻ i, United States.  The population was 20,881 at the 2010 census.

Hana, Hawaii: Hāna is a census-designated place (CDP) in Maui County, Hawaii, United States.  The population was 1,235 at the 2010 census.  Hana is located at the eastern end of the island of Maui and is one of the most isolated communities in the state.  It is reached mainly via the Hana Highway, a long, winding, 52 mi highway along Maui's northern shore.

Lahaina, Hawaii: Lāhainā is the largest census-designated place (CDP) in West Maui, Maui County, Hawaii, United States, and the gateway to the Ka'anapali and Kapalua beach resorts to its north.  As of the 2010 census, the CDP had a resident population of 11,704.  Lahaina encompasses the coast along Hawaii Route 30 from a tunnel at the south end, through Olawalu, and to the CDP of Napili-Honokowai to the north.  During the tourist season, the population can swell to nearly 40,000 people.

Wailea, Hawaii: Wailea is a census-designated place (CDP) in Maui County, Hawaiʻ i, United States.  As of the 2010 census, it had a population of 5,938.  Prior to 2010, the area was part of the Wailea-Makena census-designated place.

Supporting paragraphs: Maui Kihei, Hawaii
Answer: 20,881