Lead Paint Risk in Santa Clara County, California

60.4%Pre-1978 Housing

419,523Pre-1978 Units

694,209Total Housing Units

408Census 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

419,523 housing units in Santa Clara County were built before 1978.
The county's pre-1978 housing share is 60.4%, compared with the state rate of 56.7%.
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 408 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 5108.02	746	751	99.3%	72	146	493	26	9
Census Tract 5120.31	1,355	1,377	98.4%	702	577	76	0	0
Census Tract 5120.37	939	955	98.3%	370	536	3	16	14
Census Tract 5062.04	2,182	2,232	97.8%	729	894	474	59	26
Census Tract 5048.06	806	825	97.7%	61	33	671	24	17
Census Tract 5079.06	1,451	1,489	97.4%	144	466	810	18	13
Census Tract 5029.03	1,926	1,990	96.8%	31	1,170	664	52	9
Census Tract 5068.03	2,183	2,257	96.7%	600	857	629	31	66
Census Tract 5032.11	1,180	1,221	96.6%	513	600	26	41	0
Census Tract 5120.45	1,667	1,734	96.1%	418	1,072	141	36	0
Census Tract 5044.11	1,572	1,641	95.8%	690	830	18	20	14
Census Tract 5119.07	1,277	1,333	95.8%	310	936	31	0	0
Census Tract 5032.08	702	734	95.6%	303	159	231	5	4
Census Tract 5026.03	1,026	1,075	95.4%	61	318	503	144	0
Census Tract 5050.07	968	1,015	95.4%	168	723	63	14	0
Census Tract 5029.01	2,207	2,318	95.2%	497	912	753	28	17
Census Tract 5101	1,067	1,121	95.2%	245	466	344	12	0
Census Tract 5120.30	898	944	95.1%	326	539	22	4	7
Census Tract 5119.13	1,365	1,450	94.1%	894	460	11	0	0
Census Tract 5120.47	1,581	1,683	93.9%	647	805	84	37	8
Census Tract 5044.23	576	617	93.4%	188	300	60	28	0
Census Tract 5018	1,747	1,873	93.3%	60	161	390	159	977
Census Tract 5030.03	1,754	1,880	93.3%	243	1,117	374	20	0
Census Tract 5061.03	1,617	1,735	93.2%	178	412	1,011	8	8
Census Tract 5079.04	1,043	1,121	93.0%	83	508	410	35	7
Census Tract 5061.01	1,552	1,670	92.9%	106	847	566	22	11
Census Tract 5082.06	1,384	1,492	92.8%	190	480	714	0	0
Census Tract 5083.01	1,408	1,521	92.6%	231	275	837	0	65
Census Tract 5083.03	891	962	92.6%	67	320	457	47	0
Census Tract 5035.04	1,136	1,229	92.4%	64	342	667	63	0
Census Tract 5074.01	1,794	1,943	92.3%	585	821	314	57	17
Census Tract 5084.01	2,314	2,512	92.1%	211	519	1,541	43	0
Census Tract 5029.02	2,830	3,081	91.9%	592	1,409	762	56	11
Census Tract 5032.07	856	932	91.8%	799	39	13	0	5
Census Tract 5065.05	1,519	1,655	91.8%	533	546	277	126	37
Census Tract 5029.07	1,252	1,366	91.7%	408	588	228	7	21
Census Tract 5099.01	742	811	91.5%	95	233	328	86	0
Census Tract 5035.06	1,174	1,284	91.4%	409	677	88	0	0
Census Tract 5058	1,567	1,716	91.3%	67	103	880	465	52
Census Tract 5012	1,394	1,529	91.2%	109	91	90	123	981
Census Tract 5044.10	1,136	1,247	91.1%	612	488	27	9	0
Census Tract 5013	1,182	1,299	91.0%	35	247	105	59	736
Census Tract 5043.15	1,785	1,963	90.9%	1,686	54	45	0	0
Census Tract 5034.01	929	1,023	90.8%	101	251	549	23	5
Census Tract 5066.03	1,372	1,517	90.4%	148	931	247	46	0
Census Tract 5043.20	825	915	90.2%	672	89	56	0	8
Census Tract 5053.04	1,022	1,136	90.0%	14	214	729	65	0
Census Tract 5043.14	1,242	1,382	89.9%	613	526	98	5	0
Census Tract 5084.03	936	1,041	89.9%	209	240	487	0	0
Census Tract 5082.03	1,675	1,865	89.8%	581	800	251	43	0
Census Tract 5020.01	2,026	2,265	89.4%	276	266	291	566	627
Census Tract 5030.02	1,228	1,375	89.3%	163	285	772	8	0
Census Tract 5111	1,826	2,046	89.2%	53	96	1,121	432	124
Census Tract 5075	1,971	2,213	89.1%	333	922	537	68	111
Census Tract 5120.05	1,956	2,197	89.0%	1,021	868	49	0	18
Census Tract 5100.02	1,260	1,417	88.9%	88	373	738	51	10
Census Tract 5011.02	1,251	1,411	88.7%	44	26	285	136	760
Census Tract 5080.03	724	816	88.7%	105	397	169	28	25
Census Tract 5062.02	2,472	2,790	88.6%	190	996	1,265	13	8
Census Tract 5025	2,344	2,649	88.5%	268	411	585	605	475
Census Tract 5028	1,359	1,541	88.2%	99	411	727	81	41
Census Tract 5066.04	2,272	2,578	88.1%	87	1,369	801	15	0
Census Tract 5026.01	1,247	1,422	87.7%	462	424	228	79	54
Census Tract 5098.02	1,057	1,205	87.7%	173	178	676	30	0
Census Tract 5079.03	1,566	1,787	87.6%	357	1,065	135	9	0
Census Tract 5066.01	1,484	1,700	87.3%	311	544	581	48	0
Census Tract 5023.02	1,191	1,369	87.0%	343	432	164	80	172
Census Tract 5030.01	1,487	1,709	87.0%	161	213	873	214	26
Census Tract 5032.12	874	1,005	87.0%	606	257	6	5	0
Census Tract 5108.03	1,057	1,218	86.8%	134	274	598	51	0
Census Tract 5035.09	722	833	86.7%	199	389	125	2	7
Census Tract 5100.01	1,832	2,112	86.7%	230	454	1,041	78	29
Census Tract 5120.29	2,192	2,531	86.6%	693	1,358	134	0	7
Census Tract 5063.05	2,162	2,507	86.2%	603	770	497	181	111
Census Tract 5029.08	1,954	2,269	86.1%	225	847	870	12	0
Census Tract 5068.02	1,789	2,084	85.8%	137	357	1,255	11	29
Census Tract 5066.06	1,578	1,841	85.7%	647	552	341	16	22
Census Tract 5031.11	1,039	1,215	85.5%	607	372	54	6	0
Census Tract 5120.53	1,439	1,684	85.5%	1,204	189	5	0	41
Census Tract 5032.18	933	1,095	85.2%	426	67	377	39	24
Census Tract 5033.06	735	864	85.1%	205	445	58	4	23
Census Tract 5120.42	715	843	84.8%	461	192	54	8	0
Census Tract 5064.02	2,012	2,375	84.7%	606	736	599	51	20
Census Tract 5055	1,483	1,760	84.3%	178	324	731	222	28
Census Tract 5068.04	1,338	1,588	84.3%	456	676	189	10	7
Census Tract 5119.05	928	1,101	84.3%	585	289	46	8	0
Census Tract 5041.01	1,025	1,219	84.1%	36	150	340	355	144
Census Tract 5097	1,305	1,552	84.1%	245	334	421	135	170
Census Tract 5035.10	1,101	1,310	84.0%	93	379	591	38	0
Census Tract 5033.36	691	824	83.9%	579	45	41	26	0
Census Tract 5005	1,931	2,307	83.7%	149	176	551	316	739
Census Tract 5041.02	1,191	1,423	83.7%	236	131	602	157	65
Census Tract 5035.07	350	420	83.3%	52	95	179	15	9
Census Tract 5072.05	1,565	1,888	82.9%	702	674	105	72	12
Census Tract 5119.10	907	1,098	82.6%	211	656	18	9	13
Census Tract 5120.35	1,104	1,340	82.4%	1,056	48	0	0	0
Census Tract 5029.09	1,785	2,172	82.2%	752	950	83	0	0
Census Tract 5059.02	1,542	1,876	82.2%	315	589	560	78	0
Census Tract 5093.02	1,155	1,406	82.1%	272	156	709	18	0
Census Tract 5102	1,337	1,629	82.1%	194	292	614	173	64