7 C.F.R. § 1940.560
When funding levels are under $100,000,000, all funds will be held in a National Office reserve and made available administratively in accordance with the Notice of Funding Availability (NOFA) and program regulations. When program levels are sufficient for a nationwide program, funds are allocated based upon the following criteria and weights.
(b) Basic formula criteria, data source and weight. See § 1940.552(b) of this subpart .
Each factor will receive a weight respectively of 40%, 40% and 20%. The criteria used in the basic formula are:
(3) State's percentage of National average cost per unit. The data source for the criterion specified in paragraph (b)(1) of this section is the most recent decennial Census of the United States (decennial Census). The data source for the criterion specified in paragraph (b)(2) of this section is 5-year income data from the American Community Survey (ACS) or, if needed, other Census Bureau data. The data source for the criterion specified in paragraph (b)(3) of this section is the cost per unit data using the applicable maximum per unit dollar amount limitations under section 207(c) of the National Housing Act, which can be obtained from the Department of Housing and Urban Development. The percentage representing each criterion is multiplied by the weight assigned and totaled to arrive at a State factor.
State Factor = (criterion No. 1 × weight of 40%) + (criterion No. 1 × weight of 40%) + (criterion No. 1 × weight of 20%)
[63 FR 39458, July 22, 1998, as amended at 80 FR 9876, Feb. 24, 2015]