If you need to find a financial advisor in Bellaire. TX, call Insight Wealth Strategies. Bellaire is a city in southwest Harris County, Texas, within the Houston metropolitan area, with a population of just under 19,000 people. Bellaire is known as the “City of Homes,” due to its mostly residential character. The city was founded in 1908 by Wright Baldwin as a residential neighborhood and an agricultural trading center. Bellaire is a beautiful suburb full of families, with lots of parks and a great public school system.