NEWS RELEASE
Embargoed until 11:01 p.m., central time, Wednesday, March 15, 2006

Program Contact:  Marc Thomas (mthomas@nipc.org, 312-386-8615)
Press Contact: Tom Garritano (tgarritano@nipc.org, 312-386-8609)



TWO NORTHEASTERN ILLINOIS COUNTIES AMONG NATION'S FASTEST-GROWING

Kendall is fastest-growing in Illinois and third in the U.S.,
while Will is in the top 20 nationally

CHICAGO, March 15, 2006 -- Benefiting from its proximity to large population and employment bases in northeastern Illinois, Kendall County remained the fastest-growing county in Illinois with a 9.4 percent population increase from July 1, 2004, to July 1, 2005, according to estimates released today by the U.S. Census Bureau. Kendall County, with 79,514 residents, was also the third fastest-growing county in the nation from 2004 to 2005, and fourth fastest-growing nationally since the 2000 Census with an overall population increase of 46 percent.

The Census Bureau bases its new population estimates -- which use administrative data and estimates for births, deaths and net migration -- on Census 2000 population counts updated to reflect any official census corrections.

According to the estimates, seven of the 10 fastest-growing Illinois counties between 2004 and 2005 were located in the Census Bureau's Chicago-Naperville-Joliet-IL-IN-WI Metropolitan Statistical Area (MSA).  These include Grundy County, Kendall’s neighbor to the south, ranking second in the state at 6.5 percent; Will County, fourth at 4.1 percent; and McHenry County, fifth at 2.6 percent.  The fellow MSA counties of DeKalb, Kane and Lake were also among the 10 fastest-growing in Illinois, which has a total of 102 counties.
 

Rank

10 Fastest-Growing
Illinois Counties
2004-2005

Percent Change

Rank

10 Slowest-Growing
Illinois Counties
2004-2005

Percent Change

1

.Kendall County

9.4%

1

.Alexander County

-3.3%

2

.Grundy County

6.5%

2

.Pulaski County

-2.2%

3

.Boone County

4.2%

3

.Pope County

-1.7%

4

.Will County

4.1%

4

.Washington County

-1.3%

5

.McHenry County

2.6%

5

.Henderson County

-1.2%

6

.DeKalb County

2.5%

6

.Hamilton County

-1.1%

7

.Kane County

2.0%

7

.Hancock County

-1.1%

8

.Monroe County

1.8%

8

.McDonough County

-1.0%

9

.Ogle County

1.4%

9

.Mason County

-0.9%

10

.Lake County

1.4%

10

.Knox County

-0.9%

 
Will County, which includes the cities of Joliet, Romeoville, Plainfield and Bolingbrook, was estimated to have gained 140,500 residents since the 2000 Census, by far the largest numerical increase posted by an Illinois county and 11th highest among the nation’s 3,141 counties. In the year from July 1, 2004 to July 1, 2005, Will County’s population grew 25,319, accounting for nearly half the statewide increase of 51,355. 

"Will County remains well on pace to become the state’s third largest county by 2010," said Marc Thomas, information services manager for the Northeastern Illinois Planning Commission (NIPC).  "It's now the fourth largest in the Illinois, but by the end of this decade, it will likely rank behind only Cook and DuPage.  Rounding out the top five Illinois counties estimated to have added the largest number of residents between 2004 and 2005 were Lake, Kane, McHenry and Kendall Counties, each of which added at least 6,000 more residents." 

Thomas is a long-time member of the Census Bureau's officially designated State Data Center Network (http://www.census.gov/sdc/), which is a federal-state partnership that facilitates public access to census data.  He is also a staff member in NIPC's Data Research and Forecasting group, which is responsible for compiling the official forecasts of population, employment and other socio-economic indicators that are essential inputs for transportation and land-use planning.

The complete Census Bureau report of national estimates is on-line at http://www.census.gov/.  Other local highlights include:

Growth 2004-2005

  • Population in the six counties (Cook, DuPage, Kane, Lake, McHenry and Will) that form NIPC's service area was estimated at 8,364,400 in July 2005, up 29,700 from July 2004.

  • The five collar counties together increased population by 53,200, more than offsetting a decline of 23,500 in Cook County.

  • Population growth in DuPage County, one of the nation’s fastest-growing counties a quarter century ago, has flattened out.  It increased less than 1,000 from 2004 to 2005.

Growth 2000-2005

Date

Population Counts, 2000 Census and 2000-2005 Annual Estimates

.Cook County

.DuPage County

.Kane County

.Lake County

.McHenry County

.Will County

6-County Area

2000 Census

5,376,741

904,161

404,119

644,356

260,077

502,266

8,091,720

July 1, 2000 estimate

5,377,536

906,743

407,695

648,800

261,689

508,339

8,110,802

July 1, 2001 estimate

5,378,928

915,157

424,929

662,328

270,110

533,275

8,184,727

July 1, 2002 estimate

5,365,567

921,047

442,491

675,047

279,015

559,381

8,242,548

July 1, 2003 estimate

5,349,219

924,495

458,379

682,335

288,559

585,609

8,288,596

July 1, 2004 estimate

5,327,165

928,126

472,761

692,869

296,260

617,494

8,334,675

July 1, 2005 estimate

5,303,683

929,113

482,113

702,682

303,990

642,813

8,364,394

  • Population in NIPC’s six-county service area rose 272,350 from the 2000 Census to July 2005.  This accounted for four-fifths of the statewide increase in the same period.

  •  The increase in population of the five collar counties since the 2000 Census was estimated at 345,500, slightly higher than the statewide increase of 343,700 in the same period.

  •  Will, McHenry and Kane Counties are much more reliant on in-migration to fuel growth than natural increases (births exceeding deaths).  DuPage County has joined Cook County in having more migrants who move out than move in.

Cumulative Estimates of the Components of Population Change for
Northeastern Illinois Counties: April 1, 2000 to July 1, 2005

Geographic Area

Total Population Change*

Natural Increase

Net Migration

Total

Births

Deaths

Total

Net International Migration

Net Internal Migration

Illinois

343,724

406,425

959,470

553,045

-63,011

328,020

-391,031

 

 

 

 

 

 

 

 

.Cook County

-73,139

204,841

438,660

233,819

-277,976

222,123

-500,099

.DuPage County

24,961

37,589

67,371

29,782

-12,252

29,543

-41,795

.Kane County

77,993

29,695

42,955

13,260

47,596

16,110

31,486

.Lake County

58,062

34,764

54,771

20,007

22,384

20,961

1,423

.McHenry County

43,928

12,993

21,433

8,440

29,494

4,168

25,326

.Will County

140,546

30,633

47,311

16,678

110,242

6,225

104,017

 

 

 

 

 

 

 

 

 6-County Area

272,351

350,515

672,501

321,986

-80,512

299,130

-379,642

NIPC's web has an Excel file of spreadsheets with additional data at http://www.nipc.org/forecasting/IL_CO_POP_EST_2005.xls.

 -- END --


About the Northeastern Illinois Planning Commission
The Northeastern Illinois Planning Commission (NIPC) was created in 1957 by the Illinois General Assembly as the region’s comprehensive land-use planning agency. The legislation authorizes NIPC to conduct research for planning -- including official forecasts of population, employment, and other socio-economic indicators -- to advise units of local government on their plans and policies, and to provide general comprehensive plans and policies for use by local governments. The Regional Planning Board was established in 2005 by the Governor and the Illinois General Assembly to better integrate planning for land use and transportation. NIPC and the Chicago Area Transportation Study (CATS) are being consolidated within this new, streamlined regional agency.  For more, see http://www.nipc.org.