The population of Castro county is estimated at 7,823. In 2017 there were 118 births and 36 deaths in Castro county. Castro county has 690 housing units that are owned with a mortgage or a loan, 1,169 that are owned free and clear and 885 that are renter occupied.

  The good residents of Castro County filed 2,880 federal tax returns in 2017. This amount represents 0.0% of all Texas filings and 0.002% of the entire nation. Castro had a combined total federal tax liability of $17,814,000 on earned income of $109,146,000. Other notable statistics from Castro County were 40 unemployment claims which collected a total of $167,000 and 230 charitable contributions valued at $3,040,000. 180 filings from Castro County paid a combined total of $542,000 in property taxes and 110 filings paid $615,000 on mortgage interest costs.

  In 2010 Castro county had 20 religious congregations with an estimated 5,379 members.
13.4% of the Castro population has a college level Bachelors degree or higher. 27.7% have less than a highschool diploma level education.

About 26% of Castro County voted in the presidential election of 2016. This represents a decrease from the 2012 election by 123 votes.
At $41,746 the median income is 70.5% of the Texas average. An estimated 110 people claimed to be unemployed last year in Castro, the equivalant of around 3.3% of the county population. This represents an increase in the level of unemployment from the previous year's value of 3.1%.

Top 15 Industries in Castro County.
Total # Employed	Industry Job Type
185	Retail trade
165	Health care and social assistance
142	Wholesale trade
111	Merchant wholesalers, nondurable goods
107	Professional, scientific, and technical services
79	Truck transportation
77	Accommodation and food services
73	Restaurants and other eating places
55	Specialized freight trucking
52	Finance and insurance
49	Gasoline stations
49	Other services (except public administration)
43	Limited-service restaurants
42	Manufacturing
34	Repair and maintenance

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