505 ILCS 5/8
(a) The following factors should be considered by county boards, county committees, or planning commissions, with respect to the formation of any agricultural area:
1. the viability of active farming within the proposed area and in areas adjacent thereto;
2. the presence of any viable farmlands within the proposed area and adjacent thereto that are not now in active farming;
3. the nature and extent of land uses other than active farming within the proposed area and adjacent thereto;
4. county developmental patterns and needs;
5. the existence of a conservation plan approved by the local soil and water conservation district; and
6. any other matter which may be relevant.
(from Ch. 5, par. 1008)
(Source: P.A. 84-456.)