US Counties With the Lowest Cognitive Disability

2,956 US counties ranked by cognitive disability, from lowest to highest. First are Howard County, MD (9.5%), Somerset County, NJ (9.6%) and Falls Church city, VA (9.6%). The middle one of the 2,956 has 16.3%.

What this measures

The estimated percentage of adults who report serious difficulty concentrating or remembering. It is adjusted so places with older or younger populations can be compared fairly. It is an estimate from a statistical model, not a direct count from a local survey. Source: CDC PLACES.

For most measures, a national ranking mostly sorts places by income and by how urban they are. Each county’s own page compares it with the 50 counties most like it instead, which is often the fairer view.

The 100 lowest counties

Rank	County	%
1	Howard County, MD	9.5%
2	Somerset County, NJ	9.6%
3	Falls Church city, VA	9.6%
4	Los Alamos County, NM	9.7%
5	Delaware County, OH	9.9%
6	Morris County, NJ	10%
7	Nassau County, NY	10%
8	Arlington County, VA	10%
9	Bergen County, NJ	10.1%
10	Hunterdon County, NJ	10.3%
11	Forsyth County, GA	10.4%
12	DuPage County, IL	10.5%
13	Montgomery County, MD	10.5%
14	Hamilton County, IN	10.7%
15	Sarpy County, NE	10.7%
16	New York County, NY	10.7%
17	Monmouth County, NJ	10.8%
18	Westchester County, NY	10.8%
19	Loudoun County, VA	10.8%
20	Teton County, WY	10.8%
21	Santa Clara County, CA	10.8%
22	Western Connecticut Planning Region, CT	10.8%
23	Putnam County, NY	10.9%
24	Fairfax County, VA	11%
25	Ozaukee County, WI	11%
26	Douglas County, CO	11%
27	Oconee County, GA	11.1%
28	Dallas County, IA	11.1%
29	Carver County, MN	11.1%
30	Middlesex County, NJ	11.1%
31	King County, WA	11.1%
32	Waukesha County, WI	11.1%
33	Tompkins County, NY	11.2%
34	Collin County, TX	11.2%
35	Dane County, WI	11.2%
36	San Mateo County, CA	11.2%
37	Washington County, MN	11.3%
38	Washington County, NE	11.4%
39	Rockingham County, NH	11.4%
40	Saratoga County, NY	11.4%
41	Johnson County, KS	11.5%
42	Frederick County, MD	11.5%
43	Broomfield County, CO	11.5%
44	Pitkin County, CO	11.5%
45	District of Columbia, DC	11.6%
46	Fayette County, GA	11.6%
47	Kendall County, IL	11.6%
48	Lake County, IL	11.6%
49	Oakland County, MI	11.6%
50	Kearney County, NE	11.6%
51	Saunders County, NE	11.6%
52	Cass County, ND	11.6%
53	Warren County, OH	11.6%
54	San Francisco County, CA	11.6%
55	Dakota County, MN	11.7%
56	Olmsted County, MN	11.7%
57	Lancaster County, NE	11.7%
58	Burlington County, NJ	11.7%
59	Sussex County, NJ	11.7%
60	Suffolk County, NY	11.7%
61	Lincoln County, SD	11.7%
62	Fort Bend County, TX	11.7%
63	Fulton County, GA	11.8%
64	Monroe County, IL	11.8%
65	Nantucket County, MA	11.8%
66	Scott County, MN	11.8%
67	Cass County, NE	11.8%
68	Thomas County, NE	11.8%
69	Mercer County, NJ	11.8%
70	Burleigh County, ND	11.8%
71	Newport County, RI	11.8%
72	Alexandria city, VA	11.8%
73	St. Johns County, FL	11.9%
74	Cobb County, GA	11.9%
75	Hamilton County, NE	11.9%
76	Logan County, NE	11.9%
77	Seward County, NE	11.9%
78	Travis County, TX	11.9%
79	Fairfax city, VA	11.9%
80	Anne Arundel County, MD	12%
81	Garfield County, NE	12%
82	Loup County, NE	12%
83	Wheeler County, NE	12%
84	Wake County, NC	12%
85	Union County, OH	12%
86	Denton County, TX	12%
87	Summit County, UT	12%
88	Albemarle County, VA	12%
89	Boone County, IN	12.1%
90	Cedar County, NE	12.1%
91	Albany County, NY	12.1%
92	Bristol County, RI	12.1%
93	Washington County, RI	12.1%
94	Williamson County, TX	12.1%
95	Chittenden County, VT	12.1%
96	Marin County, CA	12.1%
97	Carroll County, MD	12.2%
98	Washtenaw County, MI	12.2%
99	Gosper County, NE	12.2%
100	Howard County, NE	12.2%

More on cognitive disability

A ranking describes places, not the people in them, and a high or low place does not by itself say why. All US rankings.