Nograd County
1919: Entente withheld coal to force Trianon concessions, bisected county along Ipeľ/Ipoly River. 1950: Coal town Salgótarján displaced historical capital Balassagyarmat. 1980s: Mines closed, industry collapsed. 2022: Smallest county, 9.9% population decline, poorest indicators, demographic death spiral.
Nógrád County stretched along both banks of the Ipeľ/Ipoly River, its capital at Balassagyarmat serving medieval Hungarian administration for centuries. In 1848, lignite was discovered near Salgótarján; commercial extraction began in 1861 when the Szent István Coal Mining Company systematically tapped the deposits. By 1919, Salgótarján had become "the most important coal mining centre under Budapest's control"—a fact the Entente powers understood with strategic clarity.
May 1919: Czechoslovak forces approached Salgótarján. The Entente withheld coal supplies to Budapest, leveraging Hungary's desperate fuel needs to force territorial concessions. This was exploitative competition at the geopolitical scale: control the resource, then weaponize access to extract land. The Treaty of Trianon made the Ipeľ/Ipoly River the new border. The northern half of Nógrád County became Czechoslovakia's Novohrad County; the southern half stayed Hungarian. The coal that had been used as leverage to force the amputation remained Hungary's metabolic basis—Salgótarján's lignite fed Budapest's factories and heated its apartments. The truncated county survived because it kept the resource that had justified its own dismemberment.
1950: The county seat moved from Balassagyarmat (historical capital) to Salgótarján (industrial coal town), though the offices didn't relocate until 1952. This inverted a centuries-old hierarchy, subordinating administrative lineage to extractive capacity. Communist Hungary's heavy industry expanded around Salgótarján's mines and metallurgy. By the 1960s, the city ranked among Hungary's top industrial centers, population peaking around 40,000 by the 1980s. The entire county organized as a trophic cascade with coal at the base: mining fed heavy industry, which fed services, which fed population growth. Every layer depended on the seams staying thick.
Late 1980s: The coal ran thin. Mines closed. Heavy industry collapsed "precipitously in the aftermath of the communist era." Salgótarján's population contracted to 31,312 by 2022—a 21% decline, averaging 1.3% annually. The cascade reversed: no coal meant no industry, no industry meant no jobs, no jobs meant emigration to Pest County and Budapest. The county's total population fell to 182,459 (2022), down 9.9% from 2011, making it Hungary's smallest county by population. Annual natural decrease ranged from -586 to -2,047 through the 2010s with no positive years recorded. This is an extinction vortex: each decline accelerates the next, and interventions that cut costs make the problem worse.
2026: Nógrád County exhibits "Hungary's poorest socioeconomic indicators," trapped below the Allee effect threshold where populations can't sustain services or attract investment. The young emigrate because there are no jobs; employers don't invest because there are no workers; services close because there's no tax base. The county seat remains in Salgótarján—not because of coal (the mines are gone), not because of industry (the factories are shuttered), but because moving the administrative infrastructure back to Balassagyarmat would cost money the county doesn't have. This is senescence: the organism is aging past reproductive capacity, and resources that could maintain it would yield better returns elsewhere. The coal that was leveraged to amputate the county in 1919, then became its metabolic basis, is now exhausted. There's no visible pathway out of the demographic death spiral. Nógrád County is functionally extinct while still numbering 182,459 residents.