Zionsville is a suburban town located in the extreme southeast area of Boone County, Indiana, United States, northwest of Indianapolis. The population was 14,160 at the 2010 census, and grew to 28,357 in the 2019 estimates.Zionsville promotes itself as a tourist attraction, centered on its village-styled downtown area. This area consists primarily of Main Street, paved entirely in brick, which is lined with small retail stores and restaurants. Zionsville was laid out in 1852 when the railroad was extended to that point. It was named for William Zion, a pioneer settler.Abraham Lincoln made a whistle-stop speech in Zionsville in 1861 when traveling to his inauguration.
Town Hall (Castle Hall) was listed on the National Register of Historic Places in 1983.Zionsville is located at 39°57′11″N 86°16′10″W (39.953092, -86.269462), approximately 15 miles (24 km) northwest of Downtown Indianapolis. According to the 2010 census, Zionsville has a total area of 10.298 square miles (26.67 km2), of which 10.26 square miles (26.57 km2) (or 99.63%) is land and 0.038 square miles (0.10 km2) (or 0.37%) is water.In 2010, Zionsville annexed 39.5 square miles (102.30 km2) of land in Eagle and Union townships. This increased the area of the town to 49.7 square miles (128.72 km2) and added 9,159 residents as of 2013.
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