| Total | 33,740 | | 100.0 | | | 5,072,451 | | 100.0 | | | 456,266 | | 100.0 | |
| | | | | | | | | | | | | | | |
| Religious orientation | 22,910 | | 67.9 | | | 4,086,880 | | 80.6 | | | 329,941 | | 72.3 | |
| Roman Catholic | 7,507 | | 22.2 | | | 2,156,173 | | 42.5 | | | 146,627 | | 32.1 | |
| African Methodist Episcopal | 16 | | # | | | 1,483 | | # | | | 176 | | # | |
| Amish | 1,049 | | 3.1 | | | 31,954 | | 0.6 | | | 1,871 | | 0.4 | |
| Assembly of God | 389 | | 1.2 | | | 52,413 | | 1.0 | | | 4,400 | | 1.0 | |
| Baptist | 2,281 | | 6.8 | | | 277,961 | | 5.5 | | | 25,301 | | 5.5 | |
| | | | | | | | | | | | | | | |
| Brethren | 74 | | 0.2 | | | 9,019 | | 0.2 | | | 795 | | 0.2 | |
| Calvinist | 133 | | 0.4 | | | 29,757 | | 0.6 | | | 2,127 | | 0.5 | |
| Christian (unspecified) | 4,667 | | 13.8 | | | 657,879 | | 13.0 | | | 60,972 | | 13.4 | |
| Church of Christ | 223 | ! | 0.7 | ! | | 38,472 | | 0.8 | | | 3,803 | | 0.8 | |
| Church of God | 124 | | 0.4 | | | 10,768 | | 0.2 | | | 1,076 | | 0.2 | |
| | | | | | | | | | | | | | | |
| Church of God in Christ | 25 | | 0.1 | | | 1,909 | | # | | | 166 | | # | |
| Church of the Nazarene | 79 | | 0.2 | | | 8,839 | | 0.2 | | | 819 | | 0.2 | |
| Disciples of Christ | ‡ | | ‡ | | | ‡ | | ‡ | | | ‡ | | ‡ | |
| Episcopal | 401 | | 1.2 | | | 104,698 | | 2.1 | | | 12,055 | | 2.6 | |
| Friends | 88 | | 0.3 | | | 21,917 | | 0.4 | | | 2,776 | | 0.6 | |
| | | | | | | | | | | | | | | |
| Greek Orthodox | 30 | | 0.1 | | | 3,420 | | 0.1 | | | 382 | | 0.1 | |
| Islamic | 235 | | 0.7 | | | 33,272 | | 0.7 | | | 3,870 | | 0.8 | |
| Jewish | 999 | | 3.0 | | | 237,251 | | 4.7 | | | 26,755 | | 5.9 | |
| Latter Day Saints | ‡ | | ‡ | | | ‡ | | ‡ | | | ‡ | | ‡ | |
| Lutheran Church—Missouri Synod | 1,200 | | 3.6 | | | 138,257 | | 2.7 | | | 10,843 | | 2.4 | |
| | | | | | | | | | | | | | | |
| Evangelical Lutheran Church In America | 180 | | 0.5 | | | 14,023 | | 0.3 | | | 1,251 | | 0.3 | |
| Wisconsin Evangelical Lutheran Synod | 344 | | 1.0 | | | 30,876 | | 0.6 | | | 2,290 | | 0.5 | |
| Other Lutheran | 81 | | 0.2 | | | 6,750 | | 0.1 | | | 536 | | 0.1 | |
| Mennonite | 442 | | 1.3 | | | 24,497 | | 0.5 | | | 2,158 | | 0.5 | |
| Methodist | 292 | | 0.9 | | | 19,703 | | 0.4 | | | 2,053 | | 0.4 | |
| | | | | | | | | | | | | | | |
| Pentecostal | 383 | | 1.1 | | | 19,783 | | 0.4 | | | 2,382 | | 0.5 | |
| Presbyterian | 356 | | 1.1 | | | 43,857 | | 0.9 | | | 4,206 | | 0.9 | |
| Seventh-Day Adventist | 855 | | 2.5 | | | 53,950 | | 1.1 | | | 4,410 | | 1.0 | |
| Other | 435 | | 1.3 | | | 56,504 | | 1.1 | | | 5,707 | | 1.3 | |
| | | | | | | | | | | | | | | |
| Nonsectarian | 10,830 | | 32.1 | | | 985,571 | | 19.4 | | | 126,325 | | 27.7 | |
| # Rounds to zero. |
| ! Interpret data with caution. The coefficient of variation for this estimate is larger than 25 percent. |
| ‡ Reporting standards not met. |
| NOTE: Detail may not sum to totals because of rounding or missing values in cells where reporting standards were not met. These estimates include schools for which kindergarten is the highest grade (kindergarten-terminal schools) as well as those that provide instruction for one or more of grades 1 through 12 (or comparable ungraded levels). |
| SOURCE: U.S. Department of Education, National Center for Education Statistics, Private School Universe Survey (PSS), 2007–08. |