| Coverage (%) |
| State and local government |
38.7% |
40.5% |
39.6% |
39.3% |
−0.3 |
0.6 |
| Education |
43.2% |
45.3% |
45.0% |
44.6% |
−0.4 |
1.4 |
| K-12, Teachers |
59.3% |
62.2% |
61.4% |
59.8% |
−1.5 |
0.6 |
| K-12, Non-teachers |
37.0% |
38.6% |
38.0% |
38.5% |
0.5 |
1.5 |
| Not K-12 |
20.9% |
23.0% |
23.9% |
23.5% |
−0.3 |
2.6 |
| Non-education |
33.9% |
35.6% |
34.1% |
34.0% |
−0.1 |
0.1 |
| Membership (%) |
| State and local government |
35.5% |
37.0% |
36.1% |
35.6% |
−0.4 |
0.1 |
| Education |
39.2% |
40.9% |
40.3% |
39.9% |
−0.4 |
0.6 |
| K-12, Teachers |
54.4% |
56.8% |
55.8% |
54.8% |
−1.0 |
0.4 |
| K-12, Non-teachers |
33.0% |
34.4% |
33.6% |
33.2% |
−0.4 |
0.2 |
| Not K-12 |
18.7% |
20.3% |
20.2% |
20.5% |
0.3 |
1.9 |
| Non-education |
31.6% |
33.0% |
31.7% |
31.4% |
−0.4 |
−0.2 |
| Coverage |
| State and local government |
6,632,000 |
6,797,000 |
6,649,000 |
6,781,000 |
131,000 |
149,000 |
| Education |
3,802,000 |
3,824,000 |
3,812,000 |
3,857,000 |
45,000 |
55,000 |
| K-12, Teachers |
2,283,000 |
2,278,000 |
2,218,000 |
2,232,000 |
14,000 |
−51,000 |
| K-12, Non-teachers |
1,115,000 |
1,108,000 |
1,170,000 |
1,202,000 |
32,000 |
87,000 |
| Not K-12 |
404,000 |
438,000 |
424,000 |
423,000 |
−1,000 |
20,000 |
| Non-education |
2,831,000 |
2,973,000 |
2,837,000 |
2,924,000 |
87,000 |
93,000 |
| Membership |
| State and local government |
6,087,000 |
6,206,000 |
6,053,000 |
6,148,000 |
95,000 |
60,000 |
| Education |
3,451,000 |
3,450,000 |
3,412,000 |
3,448,000 |
36,000 |
−3,000 |
| K-12, Teachers |
2,097,000 |
2,080,000 |
2,019,000 |
2,044,000 |
25,000 |
−53,000 |
| K-12, Non-teachers |
994,000 |
985,000 |
1,034,000 |
1,035,000 |
2,000 |
41,000 |
| Not K-12 |
360,000 |
385,000 |
360,000 |
369,000 |
9,000 |
9,000 |
| Non-education |
2,636,000 |
2,756,000 |
2,641,000 |
2,699,000 |
59,000 |
63,000 |
| Total employment |
| State and local government |
17,143,000 |
16,784,000 |
16,789,000 |
17,252,000 |
463,000 |
109,000 |
| Education |
8,793,000 |
8,433,000 |
8,468,000 |
8,645,000 |
177,000 |
−148,000 |
| K-12, Teachers |
3,851,000 |
3,665,000 |
3,615,000 |
3,730,000 |
115,000 |
−122,000 |
| K-12, Non-teachers |
3,011,000 |
2,867,000 |
3,077,000 |
3,118,000 |
41,000 |
107,000 |
| Not K-12 |
1,930,000 |
1,901,000 |
1,776,000 |
1,797,000 |
21,000 |
−133,000 |
| Non-education |
8,350,000 |
8,352,000 |
8,321,000 |
8,608,000 |
286,000 |
257,000 |
| Sample size |
| State and local government |
16,673 |
14,966 |
14,690 |
13,976 |
|
|
| Education |
8,592 |
7,579 |
7,403 |
7,061 |
|
|
| K-12, Teachers |
3,765 |
3,271 |
3,105 |
3,002 |
|
|
| K-12, Non-teachers |
2,998 |
2,630 |
2,728 |
2,589 |
|
|
| Not K-12 |
1,829 |
1,678 |
1,570 |
1,470 |
|
|
| Non-education |
8,081 |
7,387 |
7,287 |
6,915 |
|
|