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  •   State: 
    Woodford County
      County all: 
    Woodford | Tazewell
      County FIPS: 
    17203 | 17179
    40°42′56″N 89°16′31″W
      Area total: 
    2.73 sq mi (7.08 km²)
      Area land: 
    2.68 sq mi (6.95 km²)
      Area water: 
    0.05 sq mi (0.12 km²)
    768 ft (234 m)
  •   Latitude: 
      Dman name cbsa: 
    Peoria, IL
    Eastern Standard Time (EST) UTC-5:00; Eastern Daylight Time (EDT) UTC-4:00
      ZIP codes: 

    Eureka, Woodford County, Illinois, United States

  •   Population: 
      Population density: 
    1,947.47 residents per square mile of area (751.86/km²)
      Household income: 
      Unemployment rate: 
  •   Sales taxes: 
      Income taxes: 

Eureka is a city in Olio Township, Woodford County, Illinois, United States. The population was 5,295 at the 2010 census. President Reagan attended and graduated from Eureka College. The town is one of the towns along the Ronald Reagan Trail, a series of roads that connect towns in central Illinois that were of importance to Reagan's early life. It is located at 40°4256N 89°1631W (40.715620, -89.275220). According to the 2010 Census, EureKA has a total area of 3.068 square miles (7.95 km²), of which 3.02 square miles of it is land and 0.048 sq miles (0.12 km²) (or 1.56%) is water. The city was originally laid out as Walnut Grove in 1855. The name was changed to E Aureka because of a naming conflict with another WalnutGrove. It was named from the Greek expression, "I have found it", which means "I've found it" The city is a tourist attraction, especially after the 2010 renovation of the Melick Garden at the College of Peace and Peace, a former pumpkin-processing plant. The college is the alma mater of former U.S. President Ronald Reagan, who returned to the town at least twelve times, including twice as President. In 1947, Reagan served as the grand marshal for the largest parade in the history of the town.


Eureka was originally laid out as Walnut Grove in 1855. The city is named from the Greek expression Eureka, meaning "I have found it" The name was changed because of a naming conflict with another Walnuts Grove. Sources differ on who proposed the name EureKA. The name is believed to have come from the word "eureka" which means "to find" or "to have found" The city was named after the Greek word for "found", Eurekia, which means 'to find' or 'to discover' in Greek. It is located on the banks of the Potomac River, which runs through the center of the city. It was originally known as "Walnut Grove" before being renamed "Eurekah" by the city's founders. The town was originally called "Woolnut Grove", but the name was later changed to "Eureska" by its founders because of the name of a nearby Walnut Tree. The current name of the town is "EUREKA" and the city was originally named "Wulnut Hill" before it was renamed Eureska in the 1800s by the town's residents. It has a population of about 2,000,000 and is located in the central part of the Ozark Mountains, which was once called the "Ozarks" The town is located near the Ozarks National Park, which is on the eastern edge of the Great Depression-era Ozarks.


Eureka is located at 40°4256N 89°1631W (40.715620, -89.275220).According to the 2010 census, Eureka has a total area of 3.068 square miles (7.95 km²) (or 98.44%) of which is land and 0.048 sq miles (0.12 km²), or 1.56% is water. The city is located in the San Francisco Bay Area, in the Bay Area Peninsula, and in the Pacific Northwest. The town has a population of 3,068, according to the census. It is the largest city in San Francisco County, California, with a total population of 4,856. The population of the city was 3,071 in the census-designated place (CDP) of 2010. It has an estimated population of 2,836. The U.S. Census Bureau estimates the city's population at 3,081. The area has an area of 7.95km², of which 3.02 km² is land, and 1.04 km² (or 0.12km²) is water, or 98.4% of the town's total area. The City's population is 3,091. It was the largest town in the state in the 1940s. The 2010 census-generated population of EureKA was 3.071, or 4,084.


As of the 2000 U.S. Census, there were 4,871 people, 1,754 households, and 1,169 families residing in the city. The racial makeup of the city was 97.97% White, 0.57% African American, 0.37% Native American,0.33% Asian, 0,16% from other races, and 0.60% from two or more races. Hispanic or Latino of any race were 1.03% of the population. The city's population was spread out with 24.3% under the age of 18, 14.5% from 18 to 24, 23.1% from 25 to 44, 16.9% from 45 to 64, and 21. 1% who were 65 years of age or older. The median age was 36 years. For every 100 females, there are 85.2 males. The average household size was 2.46 and the average family size was 3.12. The. median income for a household in theCity was $44,744, and the median income. for a family was $53,590. Though Ryan Fuller made 13.7 million in his baseball contract, the city's per capita income was $20,460. About 1.8% of those under age 18 and 2.1%. of those age 65 or over. were below the poverty line, including 0.9. of families and 1.4. of those over age 65.


Eureka is known for Eureka College, the alma mater of president Ronald Reagan. Reagan graduated in 1932 with a degree in economics and sociology and, throughout his life, remained very close to the college. Reagan returned to the town at least twelve times, including twice as President of the United States. In 1967, as newly elected Governor of California and widely rumored prospective presidential candidate, Ronald Reagan dedicated the Melick Library at his alma Alma mater. It is now estimated to be the largest center of Reagan memorabilia after the Reagan Presidential Library in California. The Reagan Museum and Peace Garden is a top tourist attraction in the community, especially after the 2010-2011 renovation of the Museum and of the Reagan special collection section at Melick library at EureKA College. Kaufman Park is the local 9 hole golf course. Eurekas Lake Park is enjoyed for its picnic grounds and occasionally fishing, but big catches are rare. The park is also well known for its annual Fourth of July fireworks display. The town styled itself the "pumpkin capital of the world" until its pumpkin-processing plant moved to nearby Morton, Illinois. It was once known as the "Pumpkin Capital of the World" for its large pumpkin harvest. It has a population of about 4,000 people, but is now home to about 2,500 people. The city is located on the banks of the Klamath River, which flows into the San Francisco Bay Area.

Air Quality, Water Quality, Superfund Sites & UV Index

The Air Quality index is in Eureka, Woodford County, Illinois = 86. These Air Quality index is based on annual reports from the EPA. Higher values are better (100=best). The number of ozone alert days is used as an indicator of air quality, as are the amounts of seven pollutants including particulates, carbon monoxide, sulfur dioxide, lead, and volatile organic chemicals. The Water Quality Index is 47. A measure of the quality of an area’s water supply as rated by the EPA. Higher values are better (100=best). The EPA has a complex method of measuring the watershed quality, using 15 indicators such as pollutants, turbidity, sediments, and toxic discharges. The Superfund Sites Index is 98. Higher is better (100=best). Based upon the number and impact of EPA Superfund pollution sites in the county, including spending on the cleanup efforts. The UV Index in Eureka = 3.7 and is a measure of an area's exposure to the sun's ultraviolet rays. This is most often a combination of sunny weather, altitude, and latitude. The UV Index has been defined by the WHO ( and is uniform worldwide.


The most recent city population of 5,227 individuals with a median age of 34 age the population grows by 5.67% in Eureka, Woodford County, Illinois population since 2000 and are distributed over a density of 1,947.47 residents per square mile of area (751.86/km²). There are average 2.4 people per household in the 1,900 households with an average household income of $57,080 a year. The unemployment rate in Alabama is 9.50% of the available work force and has dropped -5.34% over the most recent 12-month period and the projected change in job supply over the next decade based on migration patterns, economic growth, and other factors will increase by 19.82%. The number of physicians in Eureka per 100,000 population = 91.


The annual rainfall in Eureka = 36.5 inches and the annual snowfall = 19.8 inches. The annual number of days with measurable precipitation (over .01 inch) = 104. The average number of days per year that are predominantly sunny = 189. 86 degrees Fahrenheit is the average daily high temperature for the month of July and 14 degrees Fahrenheit is the average daily low temperature for the month of January. The Comfort Index (higher=better) is 40, where higher values mean a more pleasant climate. The Comfort Index measure recognizes that humidity by itself isn't the problem. (Have you noticed nobody ever complains about the weather being 'cold and humid?) It's in the summertime that we notice the humidity the most, when it's hot and muggy. Our Comfort Index uses a combination of afternoon summer temperature and humidity to closely predict the effect that the humidity will have on people.

Median Home Cost

The percentage of housing units in Eureka, Woodford County, Illinois which are owned by the occupant = 67.67%. A housing unit is a house, apartment, mobile home, or room occupied as separate living quarters. The average age of homes = 38 years with median home cost = $128,400 and home appreciation of 0.88%. This is the value of the years most recent home sales data. Its important to note that this is not the average (or arithmetic mean). The median home price is the middle value when you arrange all the sales prices of homes from lowest to highest. This is a better indicator than the average, because the median is not changed as much by a few unusually high or low values. The property tax rate of $17.48 shown here is the rate per $1,000 of home value. If for simplification for example the tax rate is $14.00 and the home value is $250,000, the property tax would be $14.00 x ($250,000/1000), or $3500. This is the 'effective' tax rate.


The local school district spends $4,187 per student. There are 16.7 students for each teacher in the school, 1621 students for each Librarian and 540 students for each Counselor. 8.02% of the area’s population over the age of 25 with an Associate Degree or other 2-year college degree, 16.00% with a master’s degree, Ph.D. or other advanced college degree and 6.37% with high school diplomas or high school equivalency degrees (GEDs).

  • Eureka's population in Woodford County, Illinois of 1,661 residents in 1900 has increased 3,15-fold to 5,227 residents after 120 years, according to the official 2020 census.

    Approximately 52.90% female residents and 47.10% male residents live in Eureka, Woodford County, Illinois.

    As of 2020 in Eureka, Woodford County, Illinois are married and the remaining 43.67% are single population.

  • 19.1 minutes is the average time that residents in Eureka require for a one-way commute to work. A long commute can have different effects on health. A Gallup poll in the US found that in terms of mental health, long haul commuters are up to 12 percent more likely to experience worry, and ten percent less likely to feel well rested. The Gallup poll also found that of people who commute 61­–90 minutes each day, a whopping one third complained of neck and back pain, compared to less than a quarter of people who only spend ten minutes getting to work.

    78.33% of the working population which commute to work alone in their car, 9.98% of the working population which commutes to work in a carpool and 1.66% of the population that has their home as their principal place of work.

  • Of the total residential buildings in Eureka, Woodford County, Illinois, 67.67% are owner-occupied homes, another 27.67% are rented apartments, and the remaining 4.66% are vacant.

  • The 54.78% of the population in Eureka, Woodford County, Illinois who identify themselves as belonging to a religion are distributed among the following most diverse religions.

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