2000 Census Facts

While there were few dramatic changes for Mount Prospect and much of Northeastern Illinois between 1990-2000, there are some interesting numbers. While the Census results are used to redistrict congressional and state legislative districts, they are also an important tool for federal, state, county and local agencies to deliver services. In addition, changes in demographics can increase or decrease the amount of federal funds for which the Village is eligible.

The following is a summary of the profiles provided to the Village by the Bureau of the Census and a summary provided by the Northeastern Illinois Planning Commission. The profiles for all municipalities, counties and states are available on line at www.census.gov.

Overall Growth
Overall, the Village has increased in population by 3,095 from 53,170 in 1990 to 56,265 in 2000. Neighboring towns saw similar increases: Des Plaines increased by 5,497 people to a total of nearly 59,000; Prospect Heights increased 1,842 people to a total of 17,081. Elk Grove Village increased to 34,727, an addition of 1,298 people; Arlington Heights had the smallest increase in the area - adding 571, bringing their total population to just over 76,000.

Regional Growth
Regionally, Cook County increased by 271,674 (5.32%) to 5,376,741 and all of Northeastern Illinois, including Cook and the collar counties, increased 830,544 (11.4%) to 8,091,720. The state saw an increase of nearly 1 million people (8.6%), resulting in a total population of 12.5 million.

Latino Population
One of the biggest stories from the census is the significant growth of the nation’s Latino population. The growth of the Hispanic population in Illinois reflects national trends. According to the Census Bureau statistics, the state’s Hispanic population stands at 1,530,262, a 69.2 % increase over the 904,449 Hispanics counted in 1990. Mount Prospect’s Latino population nearly doubled to over 6,000 residents, representing 12% of the total population. Our surrounding neighbors saw similar increases.

Median Age
And of course, we are all getting a little older. Although as the following charts reflect, Mount Prospect does not appear to be aging as quickly. While the median age for the village is not the lowest, the change from 1990 is about half that of Arlington Heights and Elk Grove Village. In addition, the second chart shows the greatest gains and losses in population by age range.


2000 Median Age

Change from 1990

Mount Prospect



Arlington Heights



Prospect Heights



Des Plaines



Elk Grove Village





Greatest Age Range Gain

Greatest Age Range Loss

Mount Prospect

35-44   +1487

25-34   -1485

Arlington Heights

55-64    +1615

25-34   -3268

Prospect Heights

45-54    +566

25-34   -534

Des Plaines

35-44    +1820

25-34   -1607

Elk Grove Village

45-54     +1488

25-34   -2199

All of the towns in the area lost population in the 25-34 range; Mount Prospect saw its greatest gain in the 35-44-age range, an increase of 1,487. The Village also had increases for age ranges between 0 – 19, as well as 65 and older.

Family Household
The census also shows an increase in the number of households and the size of families in Mount Prospect. The Census defines a “household” as the people who occupy a housing unit. A “family household” includes a householder and one or more people related to the householder by birth, marriage or adoption and living in the same housing unit.

Mount Prospect and its neighbors all saw increases in the total number of households from 1990-2000. When comparing the number of family households, Mount Prospect saw an increase, while some of our neighbors actually saw a decrease in the number of families.

For more information on the Census, visit the census web site at www.census.gov.