This article was originally published by Carolina Demography.

What determines if an area is rural or not? Why is it relevant to distinguish between urban and rural at all? In this article, we talk about why defining rural areas is difficult, and how doing so correctly can improve the lives of those who live within them.

Part of the difficulty lies in picking a definition. The variety of criteria is representative of just how complex of a topic this can be.

How does the U.S. Census Bureau define rural?

The U.S. Census Bureau defines rural as “an area that is not urban”.

So, what do they consider to be urban? An area which contains more than 50,000 people. Slightly less populated areas, those with greater than 2,500 but less than 50,000, are determined to be “urban clusters.” Any area of land that is not put into one of these categories would be considered rural.

This definition is mainly calculated by population density, though it is important to note that land cover and even airport location data are considered as well.

The Census Bureau updates the rural-urban classifications once a decade, following the decennial census. The Bureau has not yet released calculations based on the 2020 Census, and considered changes in the classification criteria, but we expect this share to decrease due to patterns of growth observed over the decade.

What are some of the other methods the U.S. government and other organizations use to define rural?

Office of Management and Budget

The Office of Management and Budget (OMB) takes a different approach to defining areas based on population density. According to the OMB, counties which are directly associated to an urbanized area containing 50,000 or more people are identified as metropolitan statistical areas (MSA). Counties which are associated with an urban area of greater than 10,000 but less than 50,000, are referred to as micropolitan statistical areas. In addition, counties in which 25 percent of the population commutes to an MSA are also considered to be metro areas.

As of March 2020, there are 384 metropolitan statistical areas and 543 micropolitan statistical areas in the United States.

Editor’s Note: The Daily Yonder uses OMB’s definition of nonmetropolitan in our county-level reporting on Covid-19 and other rural analyses.

U.S. Department of Agriculture

The U.S. Department of Agriculture (USDA) takes on multiple methodologies within the same organization. Each one is program specific. For example, their Telecommunications Loan Program recognizes any area with less than 5,000 residents to be rural. At the same time, they have many other initiatives that categorize areas with up to 50,000 residents to be rural, as well.

Why are there so many different ways to distinguish rural areas from urban ones?

No one definition is “more correct,” so to speak. The existence of multiple methodologies allows for flexibility when applying the classifications.

The Census Bureau and OMB definitions are mainly used for statistical analysis. They provide clear cut delineations of rural versus urban areas, even though they do so differently. The Health Research Services Administration notes that the OMB definition likely undercounts rural areas while the Census Bureau definition overcounts them.

On the other hand, the USDA’s flexibility allows for programs to target specific populations more effectively. For example, the Telecommunications Loan Program’s goal is to provide more areas with high-speed internet and reliable communication networks. They determine that 5,000 people is the threshold because studies have shown that those are the locations that need the most assistance with telecommunications infrastructure. Other USDA programs identify rural using issue-specific literature. Having an intentional target population increases the effectiveness of their policy or program.

Why is it important to distinguish between an area being rural and urban?

A large body of research has identified differences in economics, geography, demographics, and even culture between rural and urban areas. These community-defining characteristics have significant implications for legislative efforts at all levels of government.

We can see some of these differences in the following areas:

Population Changes

Rural areas across the US and across North Carolina are shrinking. Over the last decade, 51 counties in North Carolina lost population and many of these losses were in more rural counties in the Sandhills and Northeast regions of the state.

Editor’s Note: Nationally, about half of all counties lost population over the last decade. Two-thirds of nonmetropolitan counties lost population, while about one-quarter of metropolitan counties did. (See Rural Population Declines Slightly over Last Decade.)

Migration patterns also vary significantly between the two locales. Nationally, urban areas have been rapidly gaining population by way of immigration, and suburban areas mainly through domestic migration. Rural areas, however, have a larger number of people exiting than they do moving in.

Age of Population

Pew notes that “older adults are a higher share of the population in rural areas than in urban and suburban counties.”

Access to Jobs and Healthcare

An analysis from the Rural Health Research Project at UNC-Chapel Hill found that at least 181 rural hospitals have closed or stopped in-patient services nationwide since 2005.  We also see a gap in job availability and wages: Analysis from the Agricultural Policy Review at Iowa State University found that rural areas had lower monthly labor force participation rates from January 2019 through May 2020. They attribute this to a variety of factors, including “differing employment opportunities, age structure, [and] gender norms.”

The  Economic Research Service at the U.S. Department of Agriculture notesFrom its post-recession low, in 2010, to 2017, rural wage and salary employment has grown at an average annual rate of 0.5 percent, compared to 1.8 percent in urban areas.”

Access to broadband

The Pew Research Center found that a quarter of people living in rural areas have said access to high-speed internet is a major problem. (An additional 34% of people living in rural areas say high-speed access is a minor problem – both categories are much greater than urban and suburban counterparts.)

Broadband internet access and availability is more variable in less densely populated regions, which has become increasingly apparent throughout the pandemic as adults and children have pivoted to online work and instruction

Getting urban versus rural from census for the first time since 2010.

The Census Bureau reclassifies urban versus rural after every decennial census (released every 10 years). The reclassification data will be released in 2022 (date TBA).

The 2010 census identified 3,573 urban areas nationwide representing roughly 81 percent of the U.S. population at the time. In contrast, 97 percent of the country’s land area is deemed rural while holding less than 20 percent of the country’s population.

Though many rural areas have lost population, other rural counties, particularly those located near larger urban areas, have increased in population.