Jersey City is bounded by water on both sides, with the Hudson River and Upper New York Bay on one side and the Hackensack River and Newark Bay on the other. About 30 percent of its area is water.
Hudson County runs its government from Jersey City, which had 292,449 residents in 2020. The city covers 14.75 square miles of land and 6.29 square miles of water, sits about 20 feet above sea level and has 30.7 miles of waterfront. The Hudson River and Upper New York Bay bound it on the east, the Hackensack River and Newark Bay on the west, with Liberty State Park the largest park.
Housing varies from restored brownstones around Paulus Hook, Hamilton Park and Van Vorst Park to the planned community at Newport, built on old Erie Lackawanna rail yards, and a growing skyline of high-rises. Wikipedia gives a July high of 84 degrees and a low of 69, with monthly precipitation between about 3.2 and 4.6 inches. Warm, wet months suit mosquitoes, and dense buildings keep roaches and mice close.