At any time after a county or counties is excluded from the area of operation of a regional housing authority as provided in Section 43-33-109, the board of supervisors of any such county may adopt a resolution declaring that there is a need for a housing authority in the county, if the board shall find such need according to the provisions of Section 43-33-5 of the Housing Authorities Law. Thereupon a public body corporate and politic to be known as the housing authority of the county shall exist for such county and may transact business and exercise its powers in the same manner as though created by said Section 43-33-5. Nothing contained herein shall be construed as preventing such county from thereafter being included within the area of operation of a regional housing authority as provided in Sections 43-33-103 or 43-33-107 of this article.