Williams County is the wealthiest county in North Dakota. Williston is the largest city located within this county.
  The population of Williams county is estimated at 34,195. In 2017 there were 651 births and 213 deaths in Williams county. Williams county has 3,359 housing units that are owned with a mortgage or a loan, 3,083 that are owned free and clear and 2,851 that are renter occupied.

  The residents of Williams County filed 16,870 federal tax returns in 2017. This amount represents 4.7% of all North Dakota filings and 0.011% of the entire nation. Williams had a combined total federal tax liability of $255,225,000 on earned income of $1,341,609,000. Other notable statistics from Williams County were 970 unemployment claims which collected a total of $6,428,000 and 2,390 charitable contributions valued at $20,527,000. 2,690 filings from Williams County paid a combined total of $6,638,000 in property taxes and 2,280 filings paid $20,592,000 on mortgage interest costs.

  In 2010 Williams county had 51 religious congregations with an estimated 12,897 members.
22.6% of the Williams population has a college level Bachelors degree or higher. 7.4% have less than a highschool diploma level education.

Approximately 37% of Williams County voted in the presidential election of 2016. This is an increase from the 2012 election by 2,929 votes.
At $80,161 the median income is 128.5% of the North Dakota average. An estimated 577 people claimed to be unemployed last year in Williams, the equivalant of around 2.5% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 4.3%.

Top 15 Industries in Williams County.
Total # Employed	Industry Job Type
2,205	Transportation and warehousing
2,152	Accommodation and food services
2,010	Truck transportation
1,833	Retail trade
1,731	Specialized freight trucking
1,527	Wholesale trade
1,485	Health care and social assistance
1,287	Specialized freight (except used goods) trucking, local
1,143	Food services and drinking places
1,009	Accommodation
1,008	Merchant wholesalers, durable goods
953	Restaurants and other eating places
819	Real estate and rental and leasing
774	Administrative and support and waste management and remediation services
691	Commercial and industrial machinery and equipment rental and leasing

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