Annual Estimates of the Population for Counties of Illinois: April 1, 2000 to July 1, 2004 (download Excel file of this table)
Geographic Area	Population estimates					April 1, 2000		Change, April 1, 2000 Estimates Base to July 1, 2004
	July 1, 2004	July 1, 2003	July 1, 2002	July 1, 2001	July 1, 2000	Estimates base	Census	Number	Percent
Illinois	12,713,634	12,649,087	12,585,204	12,518,441	12,439,674	12,419,647	12,419,293	293,987	2.37%
.Adams County	66,916	67,405	67,818	67,996	68,203	68,277	68,277	-1,361	-1.99%
.Alexander County	9,191	9,281	9,456	9,480	9,588	9,590	9,590	-399	-4.16%
.Bond County	17,980	17,882	17,851	17,618	17,646	17,631	17,633	349	1.98%
.Boone County	48,490	46,590	44,800	43,374	42,083	41,786	41,786	6,704	16.04%
.Brown County	6,805	6,858	6,839	6,927	6,955	6,950	6,950	-145	-2.09%
.Bureau County	35,155	35,302	35,271	35,291	35,498	35,503	35,503	-348	-0.98%
.Calhoun County	5,190	5,121	5,012	5,064	5,092	5,084	5,084	106	2.08%
.Carroll County	16,339	16,381	16,380	16,448	16,623	16,674	16,674	-335	-2.01%
.Cass County	13,816	13,814	13,653	13,691	13,682	13,695	13,695	121	0.88%
.Champaign County	184,369	183,910	182,323	180,810	179,803	179,669	179,669	4,700	2.62%
.Christian County	35,322	35,151	35,215	35,218	35,362	35,372	35,372	-50	-0.14%
.Clark County	16,906	16,923	16,999	16,974	16,996	17,008	17,008	-102	-0.60%
.Clay County	14,186	14,275	14,294	14,360	14,551	14,560	14,560	-374	-2.57%
.Clinton County	36,065	35,998	35,799	35,696	35,559	35,531	35,535	534	1.50%
.Coles County	51,528	51,722	51,858	52,267	53,041	53,196	53,196	-1,668	-3.14%
.Cook County	5,327,777	5,347,614	5,364,160	5,378,567	5,377,467	5,376,815	5,376,741	-49,038	-0.91%
.Crawford County	20,059	20,063	20,165	20,304	20,404	20,452	20,452	-393	-1.92%
.Cumberland County	11,066	11,048	11,101	11,179	11,263	11,253	11,253	-187	-1.66%
.DeKalb County	95,503	93,651	92,000	90,532	89,295	88,969	88,969	6,534	7.34%
.De Witt County	16,597	16,632	16,654	16,747	16,792	16,798	16,798	-201	-1.20%
.Douglas County	19,942	19,877	19,952	19,955	19,920	19,922	19,922	20	0.10%
.DuPage County	928,718	924,193	920,918	915,195	906,778	904,161	904,161	24,557	2.72%
.Edgar County	19,276	19,359	19,416	19,564	19,659	19,704	19,704	-428	-2.17%
.Edwards County	6,758	6,834	6,836	6,884	6,965	6,971	6,971	-213	-3.06%
.Effingham County	34,575	34,501	34,414	34,369	34,268	34,264	34,264	311	0.91%
.Fayette County	21,649	21,576	21,573	21,573	21,801	21,802	21,802	-153	-0.70%
.Ford County	14,270	14,150	14,162	14,210	14,221	14,241	14,241	29	0.20%
.Franklin County	39,464	39,228