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Prime Farmland, by Land Use, by Region and Year

Estimates presented here are based upon the latest information from the National Resources Inventory (NRI). The NRI is a longitudinal sample survey based upon scientific statistical principles and procedures. It is conducted by the U.S. Department of Agriculture’s Natural Resources Conservation Service (NRCS), in cooperation with Iowa State University’s Center for Survey Statistics and Methodology. These results are based upon the 2007 NRI, which provides nationally consistent data for the 25-year period 1982–2007. Estimates here cover the contiguous 48 states. Separate estimates include Hawaii, Alaska, and the Caribbean.

Margins of error are reported for each NRI estimate and must be considered at all scales of analysis. The margin of error is used to construct the 95 percent confidence interval for the estimate. The lower bound of the interval is obtained by subtracting the margin of error from the estimate; the upper bound is obtained by adding the margin of error to the estimate. A 95 percent confidence interval means that in repeated samples from the same population, 95 percent of the time the true underlying population parameter will be contained within the lower and upper bounds of the interval.

Table 33. Prime Farmland, by Land Use, by Farm Production Region and Year, in Thousands of Acres, with Margins of Error
Region Year Cropland Pastureland Rangeland Forest Land All Other Total
Appalachian 1982 12,685.7
±257.3
4,253.4
±165.3
0.0
--
7,229.8
±248.3
490.2
±31.9
24,659.1
±352.3
1987 11,962.7
±275.1
4,402.5
±186.6
0.0
--
7,244.5
±240.4
694.1
±38.2
24,303.8
±340.6
1992 11,220.7
±275.3
4,399.4
±168.4
0.0
--
7,175.3
±237.6
1,084.1
±68.5
23,879.5
±325.8
1997 10,895.9
±241.2
4,281.6
±154.7
0.0
--
7,136.7
±227.5
1,037.1
±68.9
23,351.3
±317.7
2002 10,670.5
±341.3
4,191.0
±230.0
0.0
--
7,103.6
±276.2
929.7
±79.4
22,894.8
±379.9
2007 10,092.2
±360.9
4,439.7
±270.7
0.0
--
7,105.7
±292.9
980.8
±164.9
22,618.4
±384.3
Corn Belt 1982 66,295.4
±500.3
7,244.7
±243.7
63.2
±28.8
4,369.4
±160.1
1,634.1
±48.4
79,606.8
±541.2
1987 65,907.6
±494.1
6,624.0
±231.2
36.0
±25.1
4,449.2
±158.4
2,233.2
±83.8
79,250.0
±535.1
1992 64,420.6
±488.8
6,461.5
±248.1
36.0
±25.1
4,504.9
±162.0
3,473.0
±132.8
78,896.0
±537.1
1997 64,364.0
±480.5
5,899.8
±238.1
35.5
±25.5
4,610.1
±157.0
3,328.7
±119.1
78,238.1
±534.6
2002 63,963.9
±531.9
6,097.9
±287.4
35.5
±70.9
4,759.1
±233.6
2,922.9
±122.1
77,779.3
±566.1
2007 63,403.9
±634.1
6,214.3
±365.8
40.9
±152.4
4,811.1
±276.2
2,912.9
±246.3
77,383.1
±607.3
Delta States 1982 17,500.3
±569.0
5,557.2
±244.5
21.1
±21.5
12,749.6
±364.7
356.6
±68.1
36,184.8
±650.0
1987 16,806.1
±549.6
5,661.2
±223.1
22.0
±21.5
12,768.2
±396.9
655.6
±67.9
35,913.1
±662.2
1992 15,925.7
±537.2
5,745.5
±232.4
23.2
±39.6
12,918.4
±368.1
1,062.8
±87.4
35,675.6
±658.5
1997 15,354.7
±523.6
5,677.9
±237.6
26.8
±38.9
13,195.7
±337.2
1,129.7
±82.8
35,384.8
±645.5
2002 14,814.5
±572.3
5,401.4
±365.5
26.6
±66.8
13,641.0
±479.8
1,200.9
±88.7
35,084.4
±640.7
2007 14,401.4
±607.7
5,369.6
±420.7
26.4
±26.7
13,793.7
±456.4
1,243.5
±143.5
34,834.6
±570.7
Lake States 1982 28,067.6
±619.6
2,693.2
±190.8
0.0
--
6,053.4
±329.1
1,027.0
±49.4
37,841.2
±751.8
1987 27,647.5
±621.6
2,514.7
±202.1
0.0
--
6,018.7
±334.0
1,475.8
±74.6
37,656.7
±749.8
1992 26,967.5
±584.0
2,330.4
±187.8
0.0
--
6,026.0
±330.4
2,140.7
±107.7
37,464.6
±753.6
1997 26,538.7
±603.8
2,377.1
±194.0
0.0
--
6,129.5
±314.3
2,125.8
±116.9
37,171.1
±746.1
2002 26,088.0
±586.0
2,649.4
±340.4
0.0
--
6,250.6
±344.4
1,981.2
±103.4
36,969.2
±824.1
2007 25,595.4
±725.9
2,960.0
±489.3
0.0
--
6,257.1
±420.9
1,982.4
±243.9
36,794.9
±837.9
Mountain 1982 8,069.7
±416.6
634.6
±93.4
81.5
±30.3
27.3
±30.2
39.5
±9.9
8,852.6
±409.4
1987 7,875.9
±387.6
628.7
±85.1
73.5
±30.5
28.6
±30.2
107.5
±28.6
8,714.2
±387.2
1992 7,628.3
±338.8
636.3
±93.5
76.1
±29.6
29.8
±30.2
162.6
±48.8
8,533.1
±343.7
1997 7,464.7
±323.2
621.1
±88.9
82.5
±29.5
29.4
±30.2
164.7
±48.2
8,362.4
±334.9
2002 7,034.2
±426.3
616.3
±147.8
93.2
±18.7
28.3
±17.3
253.8
±58.4
8,025.8
±384.3
2007 6,816.3
±502.3
606.2
±149.1
152.0
±100.2
28.2
±4.2
267.6
±102.1
7,870.3
±451.4
Northeast 1982 7,007.7
±192.2
1,752.7
±112.6
0.0
--
4,588.3
±215.1
337.0
±47.5
13,685.7
±286.8
1987 6,918.2
±192.8
1,541.6
±92.2
0.0
--
4,596.8
±206.1
399.4
±49.4
13,456.0
±284.4
1992 6,698.0
±197.4
1,430.3
±84.5
0.0
--
4,617.5
±195.9
461.1
±62.6
13,206.9
±284.1
1997 6,470.1
±190.5
1,201.1
±93.7
0.0
--
4,649.8
±234.9
425.3
±45.9
12,746.3
±277.2
2002 6,113.3
±202.1
1,300.9
±121.6
0.0
--
4,572.5
±271.0
459.7
±50.6
12,446.4
±336.1
2007 5,843.0
±273.5
1,384.0
±159.1
0.0
--
4,536.0
±280.0
496.7
±67.4
12,259.7
±381.2
Northern Plains 1982 44,287.6
±740.5
2,129.8
±138.4
6,142.2
±231.2
672.7
±74.7
1,189.9
±77.4
54,422.2
±711.1
1987 44,224.5
±692.4
1,990.8
±126.1
5,882.1
±213.7
672.3
±75.3
1,625.2
±97.2
54,394.9
±712.8
1992 42,570.5
±715.2
2,067.0
±147.4
5,663.8
±209.9
687.3
±73.9
3,229.8
±132.7
54,218.4
±710.6
1997 42,625.5
±719.3
1,999.5
±135.9
5,619.4
±210.3
692.1
±75.6
3,216.4
±148.3
54,152.9
±714.2
2002 42,120.3
±740.7
2,073.8
±217.6
5,739.6
±329.1
701.9
±88.9
3,447.6
±227.7
54,083.2
±667.2
2007 41,676.9
±999.8
2,265.6
±340.9
5,683.8
±443.0
697.2
±125.4
3,648.0
±391.3
53,971.5
±831.6
Pacific 1982 9,466.4
±490.1
1,221.5
±134.6
413.8
±126.9
779.6
±115.9
180.1
±21.5
12,061.4
±553.2
1987 9,236.0
±513.5
1,217.4
±134.1
404.9
±121.0
787.3
±113.3
336.1
±57.7
11,981.7
±576.3
1992 8,795.2
±529.6
1,198.1
±96.4
406.5
±119.8
769.1
±115.7
440.4
±73.7
11,609.3
±596.9
1997 8,597.7
±528.3
1,142.6
±122.5
408.2
±120.4
749.5
±114.0
460.5
±68.4
11,358.5
±603.7
2002 8,337.0
±726.2
976.8
±103.2
469.3
±117.0
766.4
±165.4
574.5
±122.4
11,124.0
±730.2
2007 8,374.8
±660.2
923.5
±145.1
467.2
±201.9
767.4
±260.1
573.7
±152.5
11,106.6
±679.7
Southeast 1982 8,858.6
±228.7
2,893.4
±152.8
2.2
±4.4
7,772.3
±203.7
379.6
±37.5
19,906.1
±318.8
1987 8,063.9
±201.8
2,914.1
±156.1
2.2
±4.4
7,961.9
±194.1
774.7
±82.2
19,716.8
±312.5
1992 6,940.5
±224.8
3,123.5
±169.8
2.2
±4.4
8,083.6
±194.1
1,322.0
±93.1
19,471.8
±303.5
1997 6,312.1
±203.9
3,023.7
±152.9
2.2
±4.4
8,399.6
±199.9
1,304.5
±111.6
19,042.1
±297.0
2002 5,799.1
±245.5
2,961.1
±230.5
2.0
±2.0
8,934.9
±506.9
980.4
±177.7
18,677.5
±433.3
2007 5,230.5
±358.7
3,114.3
±298.5
2.0
±2.0
9,109.4
±626.8
965.4
±205.6
18,421.6
±502.6
Southern Plains 1982 27,138.8
±615.3
8,633.5
±374.2
13,310.4
±462.8
2,629.0
±151.1
500.6
±30.2
52,212.3
±810.7
1987 25,996.5
±618.3
9,000.9
±376.6
12,914.8
±489.3
2,757.6
±158.0
1,280.8
±112.1
51,950.6
±820.5
1992 24,159.4
±606.0
9,240.6
±377.4
12,736.0
±492.9
2,842.9
±166.0
2,726.8
±172.2
51,705.7
±814.0
1997 23,293.8
±642.6
9,228.2
±388.0
13,156.4
±481.6
3,072.1
±197.4
2,591.2
±183.8
51,341.7
±809.3
2002 22,227.4
±659.5
9,599.0
±500.1
13,368.0
±644.9
3,096.8
±298.0
2,571.1
±322.7
50,862.3
±916.4
2007 20,991.2
±866.7
9,960.2
±566.2
13,754.4
±918.7
3,064.7
±391.8
2,627.6
±388.1
50,398.1
±909.5
Notes:
• Cropland includes cultivated and non-cultivated cropland.
• All Other includes other rural land and Conservation Reserve Program (CRP) land. CRP was not implemented until 1985.
• When the estimate is 0.0, margins of error are not applicable and shown as a dashed line (--).
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.

 

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