Westfield is a city located in Clark County Illinois. With a 2020 population of 546, it is the 838th largest city in Illinois and the 12934th largest city in the United States . Westfield is currently declining at a rate of -1.09% annually and its population has decreased by -9.15% since the most recent census, which recorded a population of 601 in 2010. Westfield reached it's highest population of in . Spanning over 1 miles, Westfield has a population density of 558 people per square mile.
The average household income in Westfield is $56,274 with a poverty rate of 15.97%. The median rental costs in recent years comes to $731 per month, and the median house value is $64,900. The median age in Westfield is 43 years, 43.4 years for males, and 40.8 years for females.