Virginia has the widest county income gap in America

Of the 3,144 county-equivalent jurisdictions in the United States, the highest-income one sits in Virginia. So does one of the poorest. The same state contains a county where the median household earns $178,707 and a city where the median household earns $38,497. No other state in America has a gap that wide.

The American Community Survey, the public dataset behind most of the demographic figures used by federal and state government, captures the divide cleanly. Below is the high and low of Virginia, drawn entirely from public data.

The high end is northern Virginia

Loudoun County is the highest-income county in America, with a median household income of $178,707. That sits roughly $19,000 above Santa Clara County in California, the next-richest in the country. Three Virginia jurisdictions rank in the national top five. The state's five highest-income jurisdictions:

1. Loudoun County: $178,707 median household income, 4.0% poverty rate.
2. Falls Church city: $154,734, 3.6% poverty.
3. Fairfax County: $150,113, 5.9% poverty.
4. Arlington County: $140,160, 7.1% poverty.
5. Stafford County: $133,792, 5.1% poverty.

All five sit in the Washington commuter belt. Loudoun borders Fairfax, and Fairfax borders Arlington; Falls Church city is the small independent city wedged between them. Their economies track federal contracting, technology and professional services. The bachelor's-degree rate in these jurisdictions runs from 43% in Stafford to 80% in Falls Church city.

The low end is the southwest

Drive six hours and the picture inverts. Nineteen Virginia counties and independent cities report median household incomes below $50,000. Most cluster along the Appalachian spine in the state's southwest. The lowest of them is Norton city, where the median household income is $38,497 and the poverty rate is 25.7%.

1. Norton city: $38,497 median household income, 25.7% poverty rate.
2. Galax city: $41,438, 23.4% poverty.
3. Buchanan County: $42,216, 23.9% poverty.
4. Lee County: $42,269, 27.6% poverty.
5. Martinsville city: $42,434, 21.8% poverty.

These places carry the residue of coal, tobacco and furniture manufacturing, all of which have shrunk in the past few decades. Buchanan and Lee both have populations under 25,000 and poverty rates above 23%, more than double the state average.

A gap of more than four to one

The arithmetic is bracing. The median household in Loudoun County earns 4.6 times the median household in Norton city. In dollars, no other state has a county-level gap that wide: $140,210. The next-widest is Georgia, where Forsyth County and Randolph County sit $112,575 apart. Colorado, California and New Mexico fill out the next tier.

Translated into daily life, the gap is the difference between a household clearing roughly $130,000 a year after taxes and a household budgeting around $700 a month for rent. Norton's median gross rent is $670. Loudoun's is $2,317. Norton's median home value is $100,700. Loudoun's is $701,000.

Poverty does not map cleanly onto income

Income explains some of Virginia's poverty pattern, but not all of it. The jurisdiction with the highest poverty rate in the state is Radford city at 33.7%, even though its median household income of $52,791 sits above the state's poorest places. Radford is dominated by a public university, and a large student population pulls the measured poverty rate up. Harrisonburg city, home to James Madison University, is also high at 25.6%.

Strip out the two student-heavy cities and the highest-poverty places in Virginia are the same southern and southwestern places that anchor the low-income list. Lee County sits at 27.6%, Norton city at 25.7%, and Danville city at 25.0%. Virginia's poverty rate is 9.9%, below the United States overall at 12.4%.

One state, two economies

Virginia averages well. The typical Virginia household earns $90,974, 11th highest among the 50 states. Its poverty rate sits below the national figure. But the state averages disguise the unusual spread underneath. Northern Virginia bends the numbers upward. Coalfield southwest Virginia bends them down. Between the two, the gap in dollars is wider than in any other US state.

Data source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates