Black Jack is located in Saint Louis County, Missouri. There are roughly 6,487 residents, living in 2,403 households. The average temperature for Black Jack this time of the year is low of 68F and high of 89F. On average, Black Jack gets about 3.75 inches of precipitation in July. Most residents are home owners (84%), have a post secondary degree (58%) and are single, no kids (38%).
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