Using Census data the following table shows the trend in population growth for Owl's Head in comparison to other local communities, the County and State.
| Town | 1970 | 1980 | 1990 | % of Change (1980 - 1990) |
|---|---|---|---|---|
| Owl's Head | 1,281 | 1,633 | 1,574 | -3.6 |
| Rockland | 8,502 | 7,919 | 7,972 | 0.7 |
| So. Thomaston | 831 | 1,064 | 1,227 | 15.3 |
| Thomaston | 2,646 | 2,900 | 3,306 | 14 |
| Knox County | 29,013 | 32,941 | 36,310 | 10.2 |
| State of Maine | 993,722 | 1,124,660 | 1,227,928 | 9.1 |
Using Census data the following table shows the trend in median age and the present population over 65 in comparison to the County and State.
| Median Age |
% over 65 |
||||||
|---|---|---|---|---|---|---|---|
| 1970 | 1980 | 1990 | 1970 | 1980 | 1990 | ||
| Owl's Head | 33.4 | 35.00 | 41.80 | 11.00 | 16.00 | 22.00 | |
| Knox County | 34.20 | 33.70 | 37.00 | 16.00 | 16.00 | 17.00 | |
| State of Maine | 28.80 | 30.40 | 33.90 | 12.00 | 13.00 | 13.00 |
Using Census data the following table shows age distribution of the Town's population.
| 1970 | 1980 | 1990 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| # | % | # | % | % chg. | # | % | % chg. | |||
| Under 5 | 110 | 8.59 | 84 | 5.14 | -3.45 | 95 | 6.04 | 0.90 | ||
| 5 to 17 | 319 | 24.9 | 369 | 22.6 | -2.3 | 232 | 14.74 | -7.86 | ||
| 18 to 44 | 381 | 29.74 | 511 | 31.29 | 1.55 | 547 | 34.75 | 3.46 | ||
| 45 to 64 | 328 | 409 | 25.04 | -0.56 | 353 | 22.42 | -2.62 | |||
| 65 to 74 | 80 | 6.25 | 178 | 10.9 | 4.65 | 198 | 12.58 | 1.68 | ||
| 75+ | 63 | 4.92 | 82 | 5.02 | 0.1 | 149 | 9.47 | 4.45 | ||
| Total | 1281 | 100 | 1633 | 99.9 | n/a | 1574 | 100 | n/a |