Lead Paint Risk in Cook County, Illinois

74.1%Pre-1978 Housing

1,683,152Pre-1978 Units

2,270,349Total Housing Units

1332Census Tracts

How to Interpret This

This is an area-level screening signal based on Census housing-age data. It does not confirm lead paint in any specific home. Homes built before 1978 may contain lead-based paint, and certified inspection or testing is the only way to confirm a property-level hazard.

Reporter / Resident Story Kit

1,683,152 housing units in Cook County were built before 1978.
The county's pre-1978 housing share is 74.1%, compared with the state rate of 64.1%.
Local questions: Which neighborhoods have the oldest housing stock? Are lead-safe renovation resources available? Do renters and families with young children know how to request testing?

Highest-Risk Census Tracts

Individual census tracts ranked by pre-1978 housing percentage. Showing the top 100 of 1332 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 4801	928	928	100.0%	28	178	342	235	145
Census Tract 6114	1,190	1,190	100.0%	83	20	110	155	822
Census Tract 6120	622	622	100.0%	78	78	10	13	443
Census Tract 6711	492	492	100.0%	20	20	56	6	390
Census Tract 6718	499	499	100.0%	0	114	34	60	291
Census Tract 6719	436	436	100.0%	0	23	107	69	237
Census Tract 6814	1,209	1,209	100.0%	104	165	79	81	780
Census Tract 6905	481	481	100.0%	24	88	36	6	327
Census Tract 7506	1,407	1,407	100.0%	39	332	373	141	522
Census Tract 8181	959	959	100.0%	26	63	758	95	17
Census Tract 8362	159	159	100.0%	0	0	26	9	124
Census Tract 8276	1,190	1,194	99.7%	171	464	390	38	127
Census Tract 6702	565	568	99.5%	0	76	0	118	371
Census Tract 8121	1,686	1,696	99.4%	22	47	151	7	1,459
Census Tract 1303	2,026	2,040	99.3%	143	239	363	499	782
Census Tract 5305.03	1,648	1,659	99.3%	53	288	649	421	237
Census Tract 3018.01	1,263	1,273	99.2%	116	27	281	64	775
Census Tract 5003	1,006	1,014	99.2%	0	32	33	8	933
Census Tract 5306	1,270	1,280	99.2%	104	168	634	110	254
Census Tract 5001	1,734	1,750	99.1%	228	740	327	263	176
Census Tract 7111	1,057	1,067	99.1%	78	137	326	129	387
Census Tract 8137.02	1,352	1,364	99.1%	11	0	12	49	1,280
Census Tract 8262.02	2,211	2,233	99.0%	208	656	910	378	59
Census Tract 8177	1,778	1,797	98.9%	10	254	192	242	1,080
Census Tract 8291	1,492	1,509	98.9%	167	246	380	220	479
Census Tract 1511	1,927	1,951	98.8%	49	120	228	136	1,394
Census Tract 4604	1,630	1,649	98.8%	0	288	69	428	845
Census Tract 5202	1,308	1,324	98.8%	55	27	41	253	932
Census Tract 3006	1,004	1,017	98.7%	25	37	331	14	597
Census Tract 4905	810	821	98.7%	42	94	331	136	207
Census Tract 4908	1,466	1,485	98.7%	21	228	262	228	727
Census Tract 5102	1,354	1,372	98.7%	48	108	172	523	503
Census Tract 7003.02	1,833	1,857	98.7%	88	634	917	143	51
Census Tract 8141	1,426	1,445	98.7%	0	60	104	119	1,143
Census Tract 7207	1,498	1,519	98.6%	91	218	252	109	828
Census Tract 4911	1,480	1,503	98.5%	59	239	647	303	232
Census Tract 8220	1,887	1,916	98.5%	28	142	1,597	98	22
Census Tract 903	546	555	98.4%	43	54	132	90	227
Census Tract 5204	1,503	1,528	98.4%	22	56	608	112	705
Census Tract 6104	657	668	98.4%	57	8	25	41	526
Census Tract 6503.02	1,258	1,278	98.4%	90	132	511	203	322
Census Tract 4913	885	900	98.3%	126	64	134	98	463
Census Tract 6203	2,335	2,375	98.3%	232	133	1,267	389	314
Census Tract 6903	867	882	98.3%	253	124	49	135	306
Census Tract 1507	1,557	1,585	98.2%	97	281	94	118	967
Census Tract 5002	967	985	98.2%	101	36	143	160	527
Census Tract 6806	664	676	98.2%	6	50	55	196	357
Census Tract 4409	1,260	1,284	98.1%	10	147	255	249	599
Census Tract 1005	2,307	2,353	98.0%	177	539	715	604	272
Census Tract 4608	1,641	1,675	98.0%	334	109	103	17	1,078
Census Tract 7002	1,841	1,881	97.9%	218	274	995	129	225
Census Tract 7001	1,079	1,103	97.8%	0	180	599	257	43
Census Tract 7204	717	733	97.8%	5	137	377	191	7
Census Tract 8428	2,305	2,356	97.8%	112	412	99	504	1,178
Census Tract 4603.02	1,653	1,692	97.7%	0	58	59	331	1,205
Census Tract 8275	1,718	1,758	97.7%	298	531	385	196	308
Census Tract 8304	1,829	1,873	97.7%	88	208	1,430	63	40
Census Tract 1906.01	1,120	1,148	97.6%	163	52	162	220	523
Census Tract 2209.02	1,106	1,133	97.6%	57	45	8	59	937
Census Tract 4805	1,301	1,333	97.6%	10	65	360	108	758
Census Tract 5101	1,445	1,480	97.6%	39	132	184	325	765
Census Tract 7106	1,021	1,046	97.6%	145	276	41	52	507
Census Tract 7113	694	711	97.6%	122	173	167	67	165
Census Tract 7206	623	638	97.6%	8	8	90	92	425
Census Tract 8161	2,789	2,859	97.6%	447	517	189	112	1,524
Census Tract 5203	2,134	2,189	97.5%	104	273	213	336	1,208
Census Tract 7203	1,486	1,524	97.5%	31	57	327	382	689
Census Tract 8122	1,341	1,375	97.5%	27	48	306	161	799
Census Tract 8294.02	1,533	1,572	97.5%	196	181	790	339	27
Census Tract 901	1,438	1,478	97.3%	103	170	841	227	97
Census Tract 4111	1,019	1,047	97.3%	37	258	57	14	653
Census Tract 5206	822	845	97.3%	17	201	197	276	131
Census Tract 8049.02	2,373	2,438	97.3%	422	1,389	493	11	58
Census Tract 8068.02	1,137	1,168	97.3%	77	193	644	0	223
Census Tract 6913	1,071	1,102	97.2%	34	73	153	115	696
Census Tract 7303	413	425	97.2%	36	93	44	92	148
Census Tract 8133.02	1,066	1,097	97.2%	85	57	29	0	895
Census Tract 8145	1,552	1,597	97.2%	56	264	592	198	442
Census Tract 5401.02	1,345	1,385	97.1%	285	384	87	516	73
Census Tract 6704	704	725	97.1%	0	165	50	192	297
Census Tract 8148	2,571	2,647	97.1%	58	383	256	211	1,663
Census Tract 8151	1,522	1,568	97.1%	17	0	64	222	1,219
Census Tract 8182	1,890	1,947	97.1%	93	142	1,170	340	145
Census Tract 4603.01	1,415	1,459	97.0%	20	183	33	182	997
Census Tract 4907	973	1,003	97.0%	84	201	182	141	365
Census Tract 5702	819	844	97.0%	32	82	526	69	110
Census Tract 8136	1,713	1,766	97.0%	88	214	39	130	1,242
Census Tract 8340	1,427	1,471	97.0%	38	244	291	653	201
Census Tract 2513	1,678	1,732	96.9%	92	111	165	292	1,018
Census Tract 8138.01	1,031	1,064	96.9%	30	37	71	15	878
Census Tract 8157.01	1,548	1,598	96.9%	8	70	214	227	1,029
Census Tract 8351	1,509	1,558	96.9%	52	209	138	336	774
Census Tract 2519	2,480	2,563	96.8%	190	473	420	124	1,273
Census Tract 5305.02	609	629	96.8%	0	68	241	130	170
Census Tract 5808	601	621	96.8%	10	19	127	64	381
Census Tract 206.01	2,221	2,296	96.7%	178	241	772	86	944
Census Tract 3018.03	1,271	1,314	96.7%	39	14	146	118	954
Census Tract 7201	1,098	1,136	96.7%	66	54	167	270	541
Census Tract 8098	1,116	1,154	96.7%	36	98	79	77	826
Census Tract 8149	2,981	3,083	96.7%	291	28	230	506	1,926