Lead Paint Risk in Snohomish County, Washington

36.0%Pre-1978 Housing

118,025Pre-1978 Units

327,893Total Housing Units

175Census 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

118,025 housing units in Snohomish County were built before 1978.
The county's pre-1978 housing share is 36.0%, compared with the state rate of 44.4%.
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 175 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 401	1,619	1,819	89.0%	48	206	327	104	934
Census Tract 403	1,253	1,424	88.0%	17	124	92	89	931
Census Tract 405	871	1,024	85.1%	48	35	107	52	629
Census Tract 510	1,671	2,067	80.8%	654	635	348	18	16
Census Tract 404	1,648	2,140	77.0%	198	142	68	80	1,160
Census Tract 409	889	1,157	76.8%	87	261	373	80	88
Census Tract 516.02	1,298	1,750	74.2%	638	407	248	0	5
Census Tract 505.02	1,437	1,938	74.1%	257	701	325	49	105
Census Tract 411	1,594	2,185	73.0%	123	436	627	237	171
Census Tract 504.03	1,073	1,478	72.6%	330	434	281	12	16
Census Tract 517.01	2,045	2,864	71.4%	579	1,121	265	80	0
Census Tract 512	1,437	2,024	71.0%	142	540	675	49	31
Census Tract 503	1,496	2,112	70.8%	431	569	281	90	125
Census Tract 529.03	1,248	1,799	69.4%	387	204	315	174	168
Census Tract 525.04	817	1,182	69.1%	315	276	143	4	79
Census Tract 524.01	1,334	1,959	68.1%	201	369	288	130	346
Census Tract 410	1,853	2,761	67.1%	211	279	350	339	674
Census Tract 508	1,821	2,723	66.9%	271	774	677	84	15
Census Tract 502	1,065	1,644	64.8%	346	454	113	52	100
Census Tract 414	1,504	2,426	62.0%	281	388	232	18	585
Census Tract 529.06	1,114	1,809	61.6%	210	527	211	104	62
Census Tract 504.02	1,499	2,477	60.5%	363	499	463	124	50
Census Tract 507	1,766	2,919	60.5%	713	589	362	12	90
Census Tract 511	1,287	2,134	60.3%	132	157	878	112	8
Census Tract 514.01	1,349	2,239	60.3%	699	353	196	22	79
Census Tract 504.04	1,036	1,722	60.2%	301	362	227	138	8
Census Tract 509	973	1,643	59.2%	353	337	228	37	18
Census Tract 420.03	709	1,214	58.4%	475	136	51	37	10
Census Tract 505.01	1,331	2,319	57.4%	533	467	247	43	41
Census Tract 412.02	1,420	2,477	57.3%	535	364	207	188	126
Census Tract 519.32	897	1,582	56.7%	469	402	0	0	26
Census Tract 528.05	1,153	2,036	56.6%	418	490	122	112	11
Census Tract 515	1,515	2,742	55.3%	252	526	715	0	22
Census Tract 522.10	555	1,008	55.1%	62	62	38	8	385
Census Tract 524.02	1,144	2,125	53.8%	266	230	118	75	455
Census Tract 501.01	545	1,023	53.3%	313	189	24	0	19
Census Tract 415	411	776	53.0%	94	63	0	9	245
Census Tract 513.02	858	1,623	52.9%	319	498	39	0	2
Census Tract 402	1,428	2,717	52.6%	515	90	98	487	238
Census Tract 537	860	1,661	51.8%	266	248	82	118	146
Census Tract 519.16	823	1,598	51.5%	394	377	21	24	7
Census Tract 513.01	790	1,542	51.2%	272	355	163	0	0
Census Tract 528.10	751	1,484	50.6%	408	249	17	26	51
Census Tract 523.02	895	1,772	50.5%	464	113	93	9	216
Census Tract 529.05	1,083	2,166	50.0%	390	321	288	0	84
Census Tract 535.10	876	1,789	49.0%	138	79	302	73	284
Census Tract 407	1,161	2,379	48.8%	255	224	150	79	453
Census Tract 519.30	830	1,727	48.1%	182	511	76	25	36
Census Tract 413.01	1,065	2,281	46.7%	454	368	108	47	88
Census Tract 525.02	951	2,044	46.5%	326	320	84	30	191
Census Tract 416.05	915	1,992	45.9%	571	315	0	29	0
Census Tract 413.04	500	1,109	45.1%	169	64	146	70	51
Census Tract 521.05	353	784	45.0%	133	51	11	32	126
Census Tract 536.06	846	1,879	45.0%	367	158	246	0	75
Census Tract 418.08	868	1,934	44.9%	624	150	80	14	0
Census Tract 412.01	550	1,228	44.8%	198	92	190	70	0
Census Tract 416.07	519	1,162	44.7%	288	150	14	55	12
Census Tract 9400.01	1,112	2,515	44.2%	472	331	100	58	151
Census Tract 419.07	691	1,571	44.0%	424	118	50	19	80
Census Tract 408	853	1,944	43.9%	58	40	87	26	642
Census Tract 416.01	958	2,181	43.9%	185	557	111	99	6
Census Tract 418.05	1,006	2,311	43.5%	565	305	64	15	57
Census Tract 520.07	748	1,736	43.1%	668	75	0	5	0
Census Tract 528.08	537	1,256	42.8%	324	188	16	0	9
Census Tract 521.08	875	2,077	42.1%	426	168	50	64	167
Census Tract 529.04	855	2,038	42.0%	381	97	252	0	125
Census Tract 535.09	788	1,887	41.8%	593	60	56	33	46
Census Tract 506	186	449	41.4%	39	44	76	9	18
Census Tract 516.01	834	2,022	41.2%	198	431	73	89	43
Census Tract 538.01	825	2,004	41.2%	383	209	101	31	101
Census Tract 514.02	918	2,252	40.8%	226	389	243	52	8
Census Tract 526.03	419	1,046	40.1%	158	163	15	5	78
Census Tract 528.07	637	1,641	38.8%	288	295	0	0	54
Census Tract 519.13	601	1,573	38.2%	100	386	22	10	83
Census Tract 517.02	843	2,218	38.0%	153	565	70	22	33
Census Tract 417.01	992	2,628	37.7%	560	268	164	0	0
Census Tract 532.01	700	1,859	37.7%	256	241	19	66	118
Census Tract 534	837	2,234	37.5%	334	148	95	55	205
Census Tract 420.04	686	1,878	36.5%	415	138	41	80	12
Census Tract 522.08	592	1,624	36.5%	108	198	89	60	137
Census Tract 533.02	975	2,705	36.0%	328	223	0	159	265
Census Tract 9400.02	592	1,662	35.6%	205	109	153	68	57
Census Tract 538.03	795	2,302	34.5%	426	51	82	37	199
Census Tract 535.06	860	2,534	33.9%	468	168	84	51	89
Census Tract 532.02	695	2,117	32.8%	173	174	176	84	88
Census Tract 420.01	715	2,206	32.4%	588	100	14	9	4
Census Tract 522.07	658	2,042	32.2%	328	185	52	41	52
Census Tract 523.01	586	1,820	32.2%	359	60	51	20	96
Census Tract 519.26	662	2,099	31.5%	480	68	67	16	31
Census Tract 519.14	518	1,653	31.3%	180	166	131	23	18
Census Tract 521.04	508	1,626	31.2%	148	155	29	0	176
Census Tract 527.01	238	764	31.2%	84	88	14	8	44
Census Tract 519.12	240	773	31.0%	173	15	16	7	29
Census Tract 419.04	813	2,640	30.8%	378	203	205	0	27
Census Tract 526.06	606	1,978	30.6%	265	52	46	29	214
Census Tract 519.31	406	1,343	30.2%	172	126	13	88	7
Census Tract 538.02	707	2,469	28.6%	335	115	21	0	236
Census Tract 418.14	579	2,041	28.4%	237	307	17	11	7
Census Tract 521.20	351	1,265	27.7%	314	37	0	0	0
Census Tract 519.17	451	1,642	27.5%	96	180	150	15	10