What is the difference in urban area over the long-term between Bulgaria and Slovakia?

125.79 km² per grid cell, with Slovakia ahead.

How many years of comparable data are there for Bulgaria and Slovakia?

108 years are reported by both, from 1000 to 2025.

Where does this data come from?

HYDE (2025) – with minor processing by Our World in Data, published as Urban area over the long-term. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Bulgaria vs Slovakia: Urban area over the long-term

Bulgaria

960.21 km² per grid cell

in 2025

Slovakia

1,086 km² per grid cell

in 2025

Bulgaria rank

94th

Slovakia rank

92nd

Urban area over the long-term over time

Bulgaria
Slovakia

How they compare

Slovakia currently reports 1,086 km² per grid cell against 960.21 km² per grid cell in Bulgaria, a difference of 125.79 km² per grid cell.

That makes Slovakia's figure about 1.1 times Bulgaria's.

The two have swapped places 2 times across 108 shared years of data; in 1000 it was Slovakia ahead.

Bulgaria ranks 94th and Slovakia ranks 92nd of 202 countries.

Across the 40 decades both report, Bulgaria averaged higher in 12 and Slovakia in 28.

Head to head by decade

Decade	Bulgaria	Slovakia	Difference	Ahead
1000s	0.0017 km² per grid cell	0.2102 km² per grid cell	0.2085 km² per grid cell	Slovakia
1100s	0.0057 km² per grid cell	0.7569 km² per grid cell	0.7512 km² per grid cell	Slovakia
1200s	0.0182 km² per grid cell	3.03 km² per grid cell	3.01 km² per grid cell	Slovakia
1300s	0.0587 km² per grid cell	13.62 km² per grid cell	13.56 km² per grid cell	Slovakia
1400s	0.0969 km² per grid cell	34.06 km² per grid cell	33.96 km² per grid cell	Slovakia
1500s	0.4227 km² per grid cell	37.73 km² per grid cell	37.3 km² per grid cell	Slovakia
1600s	1.98 km² per grid cell	57.77 km² per grid cell	55.79 km² per grid cell	Slovakia
1700s	5.94 km² per grid cell	51.21 km² per grid cell	45.27 km² per grid cell	Slovakia
1710s	6.15 km² per grid cell	58.8 km² per grid cell	52.66 km² per grid cell	Slovakia
1720s	6.44 km² per grid cell	66.88 km² per grid cell	60.44 km² per grid cell	Slovakia
1730s	6.75 km² per grid cell	75.41 km² per grid cell	68.66 km² per grid cell	Slovakia
1740s	7.07 km² per grid cell	84.36 km² per grid cell	77.29 km² per grid cell	Slovakia
1750s	7.4 km² per grid cell	93.62 km² per grid cell	86.22 km² per grid cell	Slovakia
1760s	7.76 km² per grid cell	98.03 km² per grid cell	90.27 km² per grid cell	Slovakia
1770s	8.12 km² per grid cell	102.09 km² per grid cell	93.97 km² per grid cell	Slovakia
1780s	8.51 km² per grid cell	105.57 km² per grid cell	97.06 km² per grid cell	Slovakia
1790s	8.92 km² per grid cell	108.2 km² per grid cell	99.28 km² per grid cell	Slovakia
1800s	9.34 km² per grid cell	109.7 km² per grid cell	100.35 km² per grid cell	Slovakia
1810s	11.87 km² per grid cell	109.7 km² per grid cell	97.82 km² per grid cell	Slovakia
1820s	15.55 km² per grid cell	109.7 km² per grid cell	94.15 km² per grid cell	Slovakia
1830s	20.05 km² per grid cell	109.7 km² per grid cell	89.64 km² per grid cell	Slovakia
1840s	26.38 km² per grid cell	109.7 km² per grid cell	83.31 km² per grid cell	Slovakia
1850s	34.72 km² per grid cell	109.7 km² per grid cell	74.98 km² per grid cell	Slovakia
1860s	44.15 km² per grid cell	109.7 km² per grid cell	65.55 km² per grid cell	Slovakia
1870s	56.12 km² per grid cell	109.7 km² per grid cell	53.58 km² per grid cell	Slovakia
1880s	81.62 km² per grid cell	109.7 km² per grid cell	28.08 km² per grid cell	Slovakia
1890s	116.11 km² per grid cell	109.7 km² per grid cell	6.42 km² per grid cell	Bulgaria
1900s	134.49 km² per grid cell	109.7 km² per grid cell	24.8 km² per grid cell	Bulgaria
1910s	181.55 km² per grid cell	109.7 km² per grid cell	71.86 km² per grid cell	Bulgaria
1920s	216.64 km² per grid cell	112.97 km² per grid cell	103.67 km² per grid cell	Bulgaria
1930s	254.69 km² per grid cell	144.81 km² per grid cell	109.88 km² per grid cell	Bulgaria
1940s	302.15 km² per grid cell	191.56 km² per grid cell	110.59 km² per grid cell	Bulgaria
1950s	366.7 km² per grid cell	334.3 km² per grid cell	32.4 km² per grid cell	Bulgaria
1960s	521.23 km² per grid cell	448.91 km² per grid cell	72.32 km² per grid cell	Bulgaria
1970s	716.24 km² per grid cell	613.41 km² per grid cell	102.83 km² per grid cell	Bulgaria
1980s	860.44 km² per grid cell	790.11 km² per grid cell	70.32 km² per grid cell	Bulgaria
1990s	898.04 km² per grid cell	873.22 km² per grid cell	24.82 km² per grid cell	Bulgaria
2000s	903.24 km² per grid cell	892.06 km² per grid cell	11.18 km² per grid cell	Bulgaria
2010s	933.12 km² per grid cell	962.1 km² per grid cell	28.98 km² per grid cell	Slovakia
2020s	957.04 km² per grid cell	1,059 km² per grid cell	101.55 km² per grid cell	Slovakia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher urban area over the long-term, Bulgaria or Slovakia?: Slovakia, at 1,086 km² per grid cell against 960.21 km² per grid cell in Bulgaria as of 2025.
What is the difference in urban area over the long-term between Bulgaria and Slovakia?: 125.79 km² per grid cell, with Slovakia ahead.
How many years of comparable data are there for Bulgaria and Slovakia?: 108 years are reported by both, from 1000 to 2025.
How do Bulgaria and Slovakia rank globally for urban area over the long-term?: Bulgaria ranks 94th and Slovakia ranks 92nd of 202 countries.
Where does this data come from?: HYDE (2025) – with minor processing by Our World in Data, published as Urban area over the long-term. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

About this data

Indicator: Urban area over the long-term
Unit: km² per grid cell
Source: HYDE (2025) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 202 places, 21,816 data points, 1000–2025
Last refreshed: 07 August 2026

Total built-up area of a country over time.