What do geographers call areas whose residents share a common characteristic?

Region is one term.

What do geographers call areas whose residents share a common characteristic?

Geographers typically refer to areas whose residents share a common characteristic as "homogeneous regions" or "homogeneous areas." These regions are characterized by a high level of similarity or uniformity in terms of certain attributes, such as culture, language, ethnicity, or socio-economic status.

To determine such areas, geographers employ various methods and tools:

1. Demographic data: Geographers often analyze population statistics, such as census data, which provide information on the composition of different areas. By examining the distribution of particular characteristics across these regions, they can identify areas with a high concentration of residents sharing a common trait.

2. Spatial analysis: Geographers use spatial analysis techniques, such as geographic information systems (GIS), to map and analyze data. GIS allows the visualization and manipulation of various data layers, helping to identify patterns and clusters of specific characteristics in different areas.

3. Primary research: Geographers may conduct fieldwork, surveys, or interviews to gather primary data about the residents and their shared characteristics. This qualitative research provides insights into the cultural, social, or economic aspects that shape the homogeneous regions.

By employing these methods and tools, geographers can identify and classify areas with a high level of similarity among their residents, enabling a deeper understanding of patterns and processes within a geographic context.