Today, it is necessary to have livability characteristics for cities and especially metropolises. Therefore, the present study tries to evaluate the livability of the urban areas of Karaj municipality. The research method is evaluation-comparative and the collection of information based on library information and documentary and field data has been carried out as a survey in each neighborhood by distributing and completing questionnaires and using the ELECTERE model of sustainability in livability and ranking. The locations are specified. A statistical sample of 385 was selected by random method using Cochran's model. The livability of neighborhoods has been evaluated in four dimensions. In total, the northern neighborhoods of the region (Area 1) in addition to neighborhood 1 (located in Area 2) have shown the highest level of sustainability in livability. From the studied dimensions, it can be concluded that the localities of the region in terms of sustainability and livability from top to bottom were as follows: 5, 1, 4, 8, 6, 9, 7, 2, 11, 10 and 3 . In total, the northern neighborhoods of the region (area 1) in addition to neighborhood 1 (located in area 2) have shown a higher level of sustainability, the most important reasons for which are mentioned: the extent of the green space, the low level of air pollution, better access to facilities and services. And more green space and predetermined design and regular texture, low density, more job opportunities and higher social level of these neighborhoods. Also, a lower level of stability was observed in the southern neighborhoods (zone 1). The most important reasons for low stability are the unfavorable condition of roads and sidewalks and very high density and roads with low width and lack of various facilities and services, low security of residents, high unemployment and low income, constructions without permits and properties without documents, and the presence of incompatible uses. In addition to the residential context and the lack of green space, he pointed out the existence of various types of pollution and worn-out context.