Lead Paint Risk in Alameda County, California

66.4%Pre-1978 Housing

418,764Pre-1978 Units

630,726Total Housing Units

379Census 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

418,764 housing units in Alameda County were built before 1978.
The county's pre-1978 housing share is 66.4%, 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 379 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 9819	5	5	100.0%	0	0	0	0	5
Census Tract 4218	965	971	99.4%	19	60	84	69	733
Census Tract 4212	1,461	1,480	98.7%	19	23	138	213	1,068
Census Tract 4077	1,835	1,871	98.1%	90	55	143	252	1,295
Census Tract 4262	1,628	1,675	97.2%	19	49	77	132	1,351
Census Tract 4428	918	944	97.2%	213	649	56	0	0
Census Tract 4403.05	987	1,017	97.1%	933	15	23	0	16
Census Tract 4271	1,453	1,502	96.7%	64	30	54	174	1,131
Census Tract 4219	1,716	1,780	96.4%	60	146	272	355	883
Census Tract 4052	2,473	2,571	96.2%	120	421	577	205	1,150
Census Tract 4070	2,198	2,286	96.2%	75	192	411	97	1,423
Census Tract 4251.01	1,338	1,392	96.1%	1,253	62	0	23	0
Census Tract 4004	1,916	1,996	96.0%	152	92	113	134	1,425
Census Tract 4284	1,863	1,947	95.7%	343	431	99	51	939
Census Tract 4048	1,208	1,266	95.4%	185	225	76	134	588
Census Tract 4071.01	1,130	1,184	95.4%	0	102	413	114	501
Census Tract 4374	1,001	1,049	95.4%	36	112	813	40	0
Census Tract 4051	1,692	1,775	95.3%	54	8	51	175	1,404
Census Tract 4333	1,955	2,054	95.2%	93	135	1,505	175	47
Census Tract 4360	1,343	1,410	95.2%	8	115	1,034	167	19
Census Tract 4067	2,208	2,325	95.0%	33	146	237	539	1,253
Census Tract 4211	833	877	95.0%	72	66	112	114	469
Census Tract 4093	1,710	1,803	94.8%	277	82	233	813	305
Census Tract 4430.01	873	922	94.7%	35	171	652	15	0
Census Tract 4034.02	849	897	94.6%	86	153	48	62	500
Census Tract 4222	1,539	1,626	94.6%	169	202	162	427	579
Census Tract 4084	1,281	1,356	94.5%	66	238	145	368	464
Census Tract 4201	971	1,028	94.5%	7	25	45	128	766
Census Tract 4239.02	724	766	94.5%	101	36	40	49	498
Census Tract 4006	767	814	94.2%	38	56	60	106	507
Census Tract 4074	1,323	1,406	94.1%	97	252	239	272	463
Census Tract 4359	1,518	1,614	94.1%	158	89	1,217	51	3
Census Tract 4050	1,654	1,761	93.9%	158	112	129	111	1,144
Census Tract 4085	1,769	1,884	93.9%	135	144	244	434	812
Census Tract 4261	2,111	2,251	93.8%	56	188	528	175	1,164
Census Tract 4038	1,979	2,117	93.5%	348	146	213	80	1,192
Census Tract 4214	652	698	93.4%	38	30	24	41	519
Census Tract 4206	1,251	1,341	93.3%	38	16	24	131	1,042
Census Tract 4071.02	1,365	1,464	93.2%	90	35	228	85	927
Census Tract 4279	2,068	2,220	93.2%	628	188	136	211	905
Census Tract 4102	1,125	1,210	93.0%	39	407	191	200	288
Census Tract 4213	1,731	1,863	92.9%	40	206	37	53	1,395
Census Tract 4236.01	1,155	1,244	92.8%	71	112	120	11	841
Census Tract 4383	825	889	92.8%	36	94	673	21	1
Census Tract 4064	796	859	92.7%	34	53	163	107	439
Census Tract 4328	1,462	1,584	92.3%	382	389	445	118	128
Census Tract 4304	661	718	92.1%	86	77	447	39	12
Census Tract 4047	828	901	91.9%	29	89	155	196	359
Census Tract 4281	1,835	2,001	91.7%	97	234	221	229	1,054
Census Tract 4078	703	768	91.5%	25	79	95	139	365
Census Tract 4238	1,353	1,478	91.5%	21	98	146	96	992
Census Tract 4403.34	946	1,034	91.5%	436	390	102	15	3
Census Tract 4514.03	713	779	91.5%	157	275	271	0	10
Census Tract 4205	903	989	91.3%	67	142	190	75	429
Census Tract 4100	1,122	1,231	91.1%	117	268	359	259	119
Census Tract 4103	1,019	1,119	91.1%	214	76	301	172	256
Census Tract 4506.03	1,357	1,491	91.0%	671	592	72	22	0
Census Tract 4065	1,944	2,138	90.9%	271	333	155	323	862
Census Tract 4036	2,833	3,125	90.7%	957	1,174	276	61	365
Census Tract 4053.01	1,571	1,732	90.7%	414	316	168	101	572
Census Tract 4203.02	928	1,023	90.7%	70	89	178	245	346
Census Tract 4049	1,961	2,165	90.6%	7	121	58	129	1,646
Census Tract 4054.01	1,675	1,849	90.6%	322	146	195	92	920
Census Tract 4086	1,886	2,087	90.4%	323	143	254	134	1,032
Census Tract 4037.02	1,239	1,375	90.1%	95	380	137	14	613
Census Tract 4096	1,663	1,848	90.0%	252	245	313	237	616
Census Tract 4072	1,815	2,019	89.9%	86	237	217	188	1,087
Census Tract 4371.02	1,405	1,562	89.9%	750	119	379	57	100
Census Tract 4076	1,998	2,227	89.7%	68	262	405	356	907
Census Tract 4035.02	1,288	1,438	89.6%	336	272	344	59	277
Census Tract 4335	1,418	1,585	89.5%	113	152	1,089	34	30
Census Tract 4002	798	893	89.4%	13	48	30	102	605
Census Tract 4014	1,736	1,941	89.4%	180	100	105	173	1,178
Census Tract 4278	1,726	1,932	89.3%	78	63	116	111	1,358
Census Tract 4285	1,449	1,622	89.3%	262	716	229	30	212
Census Tract 4087	2,584	2,897	89.2%	344	192	133	162	1,753
Census Tract 4083	1,761	1,980	88.9%	48	99	510	355	749
Census Tract 4216	1,490	1,676	88.9%	61	187	275	304	663
Census Tract 4324	1,636	1,842	88.8%	317	279	512	446	82
Census Tract 4202	1,191	1,343	88.7%	144	227	163	166	491
Census Tract 4007	1,935	2,185	88.6%	253	58	127	215	1,282
Census Tract 4237	1,197	1,354	88.4%	87	70	96	27	917
Census Tract 4075	1,270	1,439	88.3%	265	160	211	227	407
Census Tract 4045.01	637	722	88.2%	64	113	160	156	144
Census Tract 4426.01	1,127	1,278	88.2%	173	557	397	0	0
Census Tract 4403.06	954	1,083	88.1%	836	42	46	30	0
Census Tract 4234	2,105	2,392	88.0%	259	468	295	217	866
Census Tract 4010	2,432	2,768	87.9%	314	31	212	119	1,756
Census Tract 4054.02	1,173	1,335	87.9%	292	208	93	39	541
Census Tract 4321	1,239	1,410	87.9%	38	103	126	221	751
Census Tract 4272	1,441	1,642	87.8%	156	140	38	212	895
Census Tract 4057	1,418	1,616	87.7%	107	174	489	189	459
Census Tract 4098	1,136	1,295	87.7%	175	131	263	349	218
Census Tract 4330	1,274	1,454	87.6%	129	55	177	879	34
Census Tract 4361	1,554	1,775	87.5%	237	164	537	481	135
Census Tract 4373	927	1,059	87.5%	149	198	386	14	180
Census Tract 4358	1,522	1,741	87.4%	77	104	220	1,092	29
Census Tract 4416.01	1,369	1,566	87.4%	241	657	428	19	24
Census Tract 4441	2,476	2,832	87.4%	775	1,245	414	19	23
Census Tract 4433.22	897	1,028	87.3%	432	414	51	0	0