Let's cross the ocean once more:
Glasgow
Expedia
Area: 3,347 km²
Population
1861: - 837,470
1881: 1,211,714
1911: 1,892,523
1921: 1,972,484 ---- 4.2%
1931: 2,008,714 ---- 1.8%
1951: 2,090,751
1961: 2,135,885 ---- 2.2%
1971: 2,101,135 --- -1.6%
1981: 1,878,406 -- -10.6%
1991: 1,779,818 --- -5.2%
2001: 1,749,319 --- -1.7%
2011: 1,787,515 ---- 2.2%
2021: 1,849,070 ---- 3.4%
Population peak: 1961
Decline from the peak: -13.4%
Biggest decline: -18.1% (1961-2001)
We discussed how Pittsburgh was unique for being the earliest US major centre to experience low growth, followed by decline. Well, as home of Industrial Revolution, British cities bring this to a whole new level.
Glasgow, the so-called "the 2nd city of the British Empire", an industrial powerhouse, world's largest shipbuilding centre. By the turn of the 20th century, it was already posting modest growth while Pittsburgh was still booming.
It peaked in 1961 and then followed the classical Rust Belt pattern, with the biggest decline we've seen so far (-18.1%).
There is a turning point in late 1990's, with Glasgow resuming its growth as other British cities, due Britain's economic resurgence, and of course, mass immigration. Here we have a divergence between British and American rust belts.