| 1/ | Includes inputed income such as gross rental value of dwellings and value of home consumption and other farm related income components such as machine hire and custom work income, rental income, and income from forest products (1978 to present). | |
| 2/ | Consists of hired workers' cash wages, social security, perquisites, and contract labor, and machine hire and custom work expenses. | |
| 3/ | Includes repair and operation of machinery; depreciation, interest, rent and taxes; and other miscellaneous expenses including agricultural chemicals (69-77). | |
| 4/ | Cibola, NM was separated from Valencia in June 1981, but in these estimates, Valencia includes Cibola through the end of 1981. | |
| 5/ | La Paz county, AZ was separated from Yuma county on January 1, 1983. | |
| 6/ | Estimates for 1979 forward reflect Alaska Census Areas as defined in the 1980 Decennial Census; those for prior years reflect Alaska Census Divisions as defined in the 1970 Decennial Census. Estimates from 1988 forward separate Aleutian Islands Census Area into Aleutians East Borough and Aleutians West Census Area. Denali and Lake + Peninsula Boroughs begin in 1991. Estimates from 1993 forward separate Skagway-Yakutat-Angoon Census Area into Skagway-Hoonah-Angoon Census Area and Yakutat Borough. | |
| B | Less than $50,000. Estimates are included in totals. | |
| I | Data not available for this year. |