The Atwima Nwabiagya Municipal Assembly (ANMA) was first established as a District Assembly by Legislative Instrument 1430 in 1988 under the decentralization system to take control of the day-to-day running of the Municipality. In 2018, it was elevated to the status of a Municipality by LI 2041. The Assembly performs executive, deliberative, and legislative functions in the interest the development of the Municipality.

The Atwima Nwabiagya Municipal lies approximately between latitude 6^o 32’N and 6^o 75’N, and between longitude 1^o 36’ and 2^o 00’ West. It is situated in the Western part of the Ashanti Region and shares common boundaries with Ahafo Ano South and Atwima Mponua Municipalitys (to the West), Atwima Nwabiagya North District (to the North), Amansie–West and Atwima Kwanwoma District (to the South), Kumasi Metropolis (to the East).  It covers an estimated area of 294.84 sq km. The Municipal capital is Nkawie. Figure 1 shows the Municipality map and the neighboring Municipalitys.

The total population of the Atwima Nwabiagya District, according to the 2010 Population and Housing Census was 149,025, with an annual growth rate of 2.7%. However, carving out the Atwima Nwabiagya Municipality has given the municipality a population of 92,867. The Census revealed that the Municipality had a sex ratio of 93, indicating the presence of more females than males. The projected population of the Municipality for 2021 is 124,925. However, the Municipality had an inter-censal projected population of 106,268.

The Municipality has an undulating topography. The lands have average heights of about 77 metres above sea level. The high lands have gentle to steep slopes. The highest points in the Municipality can be found in the Barekese, Ntensere and Tabere areas. There are a number of wider valleys with no evidence of stream flow. These valleys provide opportunities for rice, sugarcane and vegetable cultivation.

The Municipality is underlain by the Lower Birimian rocks, which consist of phyllites, greywaches, achists and gneiss, and the Cape Coast Granite. Both the Lower Birimian and the Cape Coast Granite are of considerable economic importance since they do bear Gold, and good clay deposit for ceramics and brick making.

The predominant soils in the Municipality are the Kumasi-Asuansi/Nta-Ofin Compound Associations and the Bekwai- Nzema/Oda Complex Associations.  

The Kumasi-Asuansi Compound Associations developed over cape Coast Granites are generally medium to coarse textured, good structured and moderately gravelley. The soils have a fairly high moisture holding capacity. The soils are marginal for mechanical cultivation. Hand cultivation is recommended. The soils are good for agriculture. They are suitable for tree and arable crops such as cocoa, citrus, oil palm, mangoes, guava, avocado, maize, cassava, yams, cocoyam, plantain, pawpaw, groundnuts, pineapple and ginger. The valley bottom soils are good for the cultivation of rice, sugarcane, and vegetable.

The Municipality lies within the wet semi-equatorial zone, which is marked by double maximum with annual rainfall ranging between 170cm and 185cm. The major rainfall season is from Mid-March to July, and the minor season is between September and mid-November. Rainfall in the Municipality is not distributed throughout the year. It is also not very reliable. It is therefore not safe to rely solely on rain fed agriculture. Agriculture within the Municipality must incorporate soil and water conservation measures at all times to ensure good yield.

The vegetation found in the Municipality is predominantly the semi-deciduous type. The vegetation type has largely been disturbed by human activities (logging, farming, bush fires etc), thus, depriving it of its original valuable tree species (e.g. odum, sapale), fauna and other forest products. However, there are some   pockets of forest reserves available in the Municipality. These include part of the Gyemena Forest Reserve is located in the Municipality.

According to the 2010 Municipality population and housing report, Christianity is the dominant religion in the Municipality (83.2%), Islam (10.3%), Traditional Religion (0.3%), Other Religion (0.6%), and No Religion (11.3%). There is cordiality among the religious groups and this situation provides a good environment for the development of the Municipality.