is a city in Franklin and St. Louis Counties in the U.S. state of Missouri. The population was 5,482 at the 2000 census.
Pacific is located at (38.481503, -90.750015). The city straddles the Franklin/St. Louis county line, which lies halfway on the blocks between Elm and Neosho streets. The historic Red Cedar Inn restaurant is located on the east end of the city along historic U.S. Route 66. St. Louis is 30 miles (50 km) northeast of Pacific and the communities comprising the Missouri Rhineland are 20 miles (30 km) northwest of the city.
Pacific is bordered on the Southeast by the Pacific Palisades Conservation area. Meramec River access, through the Pacific Palisades conservation area, is located east of the city next to Eureka on the north side. The majority of the Pacific Palisades area itself, south of the river, is accessed one mile (1.6 km) south of the city in Jefferson County.
The Union Pacific (formerly Missouri Pacific) railroad, Burlington Northern (formerly St. Louis San-Francisco) Railroad, historic Route 66, Brush Creek, and Fox Creek run through the town.
According to the United States Census Bureau, the city has a total area of 5.4 square miles (14.1 km²), of which, 5.4 square miles (14.0 km²) of it is land and 0.18% is water. of the city is located in St. Louis County. The city is located directly west from Eureka and five miles (8 km) east of Gray Summit.