Lead Paint Risk in King County, Washington

46.6%Pre-1978 Housing

460,482Pre-1978 Units

988,330Total Housing Units

495Census 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

460,482 housing units in King County were built before 1978.
The county's pre-1978 housing share is 46.6%, 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 495 tracts; download the full county tract CSV.

Tract	Pre-1978	Total	Risk Rate	1970s	1960s	1950s	1940s	≤1939
Census Tract 270	1,104	1,170	94.4%	44	214	260	352	234
Census Tract 62	1,575	1,679	93.8%	59	9	50	63	1,394
Census Tract 115	1,971	2,126	92.7%	224	75	298	713	661
Census Tract 119.02	1,302	1,414	92.1%	90	60	614	333	205
Census Tract 258.04	1,281	1,405	91.2%	254	511	501	7	8
Census Tract 275	1,775	2,005	88.5%	172	361	536	609	97
Census Tract 39	1,049	1,190	88.2%	49	124	513	348	15
Census Tract 211	1,485	1,688	88.0%	178	342	484	401	80
Census Tract 31	2,436	2,777	87.7%	195	223	118	656	1,244
Census Tract 233	2,205	2,529	87.2%	148	665	1,348	29	15
Census Tract 260.01	1,898	2,183	86.9%	183	251	681	618	165
Census Tract 24	1,221	1,415	86.3%	136	52	410	543	80
Census Tract 215	1,484	1,719	86.3%	266	564	395	30	229
Census Tract 120	1,314	1,524	86.2%	29	168	255	482	380
Census Tract 306	1,966	2,284	86.1%	320	388	682	155	421
Census Tract 56	2,474	2,892	85.5%	44	107	700	851	772
Census Tract 34	1,312	1,536	85.4%	73	82	108	141	908
Census Tract 97.02	2,010	2,361	85.1%	147	141	651	432	639
Census Tract 63	2,438	2,873	84.9%	108	459	368	440	1,063
Census Tract 45	940	1,108	84.8%	72	31	74	17	746
Census Tract 42.02	1,673	1,985	84.3%	11	139	152	358	1,013
Census Tract 64	1,252	1,485	84.3%	62	17	95	30	1,048
Census Tract 5	1,094	1,299	84.2%	99	136	500	232	127
Census Tract 41.01	1,206	1,436	84.0%	63	66	169	126	782
Census Tract 29	1,839	2,197	83.7%	34	151	156	101	1,397
Census Tract 278	1,200	1,433	83.7%	127	152	540	182	199
Census Tract 279.01	1,458	1,745	83.6%	132	327	413	385	201
Census Tract 28	2,062	2,470	83.5%	112	115	178	227	1,430
Census Tract 51	1,420	1,703	83.4%	76	41	101	18	1,184
Census Tract 111.02	1,666	2,007	83.0%	93	426	425	333	389
Census Tract 121	1,082	1,306	82.8%	96	278	265	317	126
Census Tract 2.01	2,124	2,572	82.6%	752	483	549	74	266
Census Tract 298.05	1,308	1,587	82.4%	310	843	112	0	43
Census Tract 231	1,279	1,559	82.0%	97	901	249	22	10
Census Tract 286	2,195	2,681	81.9%	543	465	880	127	180
Census Tract 27	2,064	2,524	81.8%	63	151	219	233	1,398
Census Tract 303.11	1,317	1,611	81.8%	510	792	0	15	0
Census Tract 104.02	1,385	1,712	80.9%	79	310	271	310	415
Census Tract 78	1,855	2,295	80.8%	36	176	61	144	1,438
Census Tract 246.01	1,401	1,741	80.5%	506	598	181	74	42
Census Tract 35	1,681	2,095	80.2%	43	120	188	103	1,227
Census Tract 40	1,220	1,523	80.1%	569	65	191	303	92
Census Tract 8	919	1,166	78.8%	119	155	398	121	126
Census Tract 102	1,641	2,089	78.6%	85	228	573	283	472
Census Tract 229.01	876	1,115	78.6%	295	391	166	8	16
Census Tract 208	1,439	1,834	78.5%	144	423	760	86	26
Census Tract 15	895	1,141	78.4%	83	73	190	364	185
Census Tract 206	957	1,223	78.3%	122	403	296	89	47
Census Tract 273	1,586	2,030	78.1%	333	437	233	318	265
Census Tract 287	1,433	1,838	78.0%	139	438	764	26	66
Census Tract 42.01	1,223	1,581	77.4%	229	52	313	481	148
Census Tract 46	1,148	1,486	77.3%	35	85	106	31	891
Census Tract 57	2,497	3,244	77.0%	356	368	286	820	667
Census Tract 214	1,199	1,564	76.7%	139	167	397	273	223
Census Tract 201	1,047	1,366	76.6%	162	335	262	109	179
Census Tract 249.01	1,335	1,743	76.6%	692	564	79	0	0
Census Tract 274	1,529	2,000	76.4%	139	304	556	217	313
Census Tract 301.02	1,301	1,706	76.3%	610	454	164	33	40
Census Tract 59.02	1,381	1,814	76.1%	220	113	101	212	735
Census Tract 100.02	1,717	2,259	76.0%	58	82	181	284	1,112
Census Tract 116.02	1,154	1,518	76.0%	70	50	224	224	586
Census Tract 222.04	983	1,294	76.0%	818	142	0	7	16
Census Tract 116.01	1,144	1,514	75.6%	127	158	389	200	270
Census Tract 319.12	1,028	1,360	75.6%	228	598	123	15	64
Census Tract 69	1,740	2,305	75.5%	107	171	267	82	1,113
Census Tract 26	1,764	2,339	75.4%	113	140	51	205	1,255
Census Tract 284.02	1,684	2,235	75.3%	505	368	417	275	119
Census Tract 70.02	2,056	2,733	75.2%	182	635	296	101	842
Census Tract 210	1,785	2,382	74.9%	155	633	609	272	116
Census Tract 2.02	1,173	1,572	74.6%	92	184	507	338	52
Census Tract 3	926	1,245	74.4%	71	151	322	262	120
Census Tract 70.01	2,374	3,194	74.3%	305	246	643	225	955
Census Tract 103.01	1,178	1,586	74.3%	271	149	73	72	613
Census Tract 118.02	1,544	2,082	74.2%	363	333	126	102	620
Census Tract 10	579	781	74.1%	53	105	254	63	104
Census Tract 249.02	1,065	1,440	74.0%	716	151	153	20	25
Census Tract 226.06	1,952	2,644	73.8%	1,035	861	31	0	25
Census Tract 20	1,170	1,591	73.5%	123	164	169	327	387
Census Tract 247.01	1,029	1,408	73.1%	271	410	331	17	0
Census Tract 302.04	1,059	1,449	73.1%	505	529	0	11	14
Census Tract 267	1,566	2,159	72.5%	118	609	561	156	122
Census Tract 97.01	2,182	3,022	72.2%	348	570	244	483	537
Census Tract 9	695	966	71.9%	48	97	219	140	191
Census Tract 14	1,750	2,435	71.9%	205	149	479	361	556
Census Tract 88	1,376	1,921	71.6%	133	28	19	74	1,122
Census Tract 290.04	992	1,389	71.4%	626	29	262	70	5
Census Tract 234.04	974	1,370	71.1%	800	47	62	8	57
Census Tract 305.04	1,564	2,201	71.1%	744	381	387	52	0
Census Tract 30	1,963	2,763	71.0%	54	73	195	435	1,206
Census Tract 294.07	1,187	1,686	70.4%	275	694	218	0	0
Census Tract 202	1,648	2,343	70.3%	292	698	520	75	63
Census Tract 261.02	1,070	1,522	70.3%	141	329	124	453	23
Census Tract 245	1,280	1,826	70.1%	344	467	354	93	22
Census Tract 291.02	1,079	1,541	70.0%	299	461	300	11	8
Census Tract 53.04	134	192	69.8%	0	0	4	17	113
Census Tract 98.01	1,326	1,903	69.7%	32	55	158	258	823
Census Tract 284.03	2,005	2,876	69.7%	505	1,061	340	30	69
Census Tract 297.01	1,467	2,111	69.5%	508	373	165	165	256
Census Tract 74.04	1,406	2,031	69.2%	167	432	64	68	675
Census Tract 16	1,383	2,002	69.1%	83	390	552	206	152