What is the difference in urban area over the long-term between Puerto Rico and Tanzania?

209 km² per grid cell, with Tanzania ahead.

How many years of comparable data are there for Puerto Rico and Tanzania?

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.

Puerto Rico vs Tanzania: Urban area over the long-term

Puerto Rico

2,845 km² per grid cell

in 2025

Tanzania

3,054 km² per grid cell

in 2025

Puerto Rico rank

43rd

Tanzania rank

41st

Urban area over the long-term over time

Puerto Rico
Tanzania

How they compare

Tanzania currently reports 3,054 km² per grid cell against 2,845 km² per grid cell in Puerto Rico, a difference of 209 km² per grid cell.

That makes Tanzania's figure about 1.1 times Puerto Rico's.

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

Puerto Rico ranks 43rd and Tanzania ranks 41st of 202 countries.

Across the 40 decades both report, Puerto Rico averaged higher in 26 and Tanzania in 14.

Head to head by decade

Decade	Puerto Rico	Tanzania	Difference	Ahead
1000s	0 km² per grid cell	0.0004 km² per grid cell	0.0004 km² per grid cell	Tanzania
1100s	0.0001 km² per grid cell	0.0021 km² per grid cell	0.002 km² per grid cell	Tanzania
1200s	0.0005 km² per grid cell	0.0088 km² per grid cell	0.0084 km² per grid cell	Tanzania
1300s	0.0022 km² per grid cell	0.0337 km² per grid cell	0.0316 km² per grid cell	Tanzania
1400s	0.0097 km² per grid cell	0.1227 km² per grid cell	0.113 km² per grid cell	Tanzania
1500s	0.0439 km² per grid cell	0.2387 km² per grid cell	0.1948 km² per grid cell	Tanzania
1600s	0.1973 km² per grid cell	0.8695 km² per grid cell	0.6721 km² per grid cell	Tanzania
1700s	0.888 km² per grid cell	3.07 km² per grid cell	2.18 km² per grid cell	Tanzania
1710s	1.3 km² per grid cell	3.73 km² per grid cell	2.43 km² per grid cell	Tanzania
1720s	1.86 km² per grid cell	4.39 km² per grid cell	2.53 km² per grid cell	Tanzania
1730s	2.66 km² per grid cell	5.13 km² per grid cell	2.48 km² per grid cell	Tanzania
1740s	3.79 km² per grid cell	5.98 km² per grid cell	2.19 km² per grid cell	Tanzania
1750s	5.41 km² per grid cell	6.94 km² per grid cell	1.54 km² per grid cell	Tanzania
1760s	7.72 km² per grid cell	8.04 km² per grid cell	0.3184 km² per grid cell	Tanzania
1770s	11.01 km² per grid cell	9.27 km² per grid cell	1.74 km² per grid cell	Puerto Rico
1780s	15.72 km² per grid cell	10.67 km² per grid cell	5.04 km² per grid cell	Puerto Rico
1790s	22.43 km² per grid cell	12.26 km² per grid cell	10.17 km² per grid cell	Puerto Rico
1800s	32.01 km² per grid cell	14.04 km² per grid cell	17.97 km² per grid cell	Puerto Rico
1810s	45.68 km² per grid cell	16.06 km² per grid cell	29.62 km² per grid cell	Puerto Rico
1820s	65.16 km² per grid cell	18.34 km² per grid cell	46.82 km² per grid cell	Puerto Rico
1830s	86.03 km² per grid cell	20.9 km² per grid cell	65.13 km² per grid cell	Puerto Rico
1840s	109.92 km² per grid cell	23.78 km² per grid cell	86.14 km² per grid cell	Puerto Rico
1850s	149.53 km² per grid cell	27.02 km² per grid cell	122.51 km² per grid cell	Puerto Rico
1860s	194.46 km² per grid cell	29.3 km² per grid cell	165.16 km² per grid cell	Puerto Rico
1870s	241.82 km² per grid cell	31.77 km² per grid cell	210.05 km² per grid cell	Puerto Rico
1880s	281.23 km² per grid cell	34.45 km² per grid cell	246.78 km² per grid cell	Puerto Rico
1890s	304.38 km² per grid cell	38.49 km² per grid cell	265.89 km² per grid cell	Puerto Rico
1900s	315.37 km² per grid cell	38.91 km² per grid cell	276.47 km² per grid cell	Puerto Rico
1910s	347.69 km² per grid cell	40.94 km² per grid cell	306.76 km² per grid cell	Puerto Rico
1920s	374.25 km² per grid cell	44.84 km² per grid cell	329.41 km² per grid cell	Puerto Rico
1930s	407.64 km² per grid cell	56.99 km² per grid cell	350.65 km² per grid cell	Puerto Rico
1940s	460.17 km² per grid cell	71.73 km² per grid cell	388.44 km² per grid cell	Puerto Rico
1950s	604.8 km² per grid cell	132.57 km² per grid cell	472.22 km² per grid cell	Puerto Rico
1960s	834.05 km² per grid cell	247.01 km² per grid cell	587.03 km² per grid cell	Puerto Rico
1970s	1,198 km² per grid cell	551.37 km² per grid cell	646.65 km² per grid cell	Puerto Rico
1980s	1,572 km² per grid cell	712.35 km² per grid cell	859.5 km² per grid cell	Puerto Rico
1990s	2,207 km² per grid cell	721.07 km² per grid cell	1,486 km² per grid cell	Puerto Rico
2000s	2,689 km² per grid cell	1,043 km² per grid cell	1,646 km² per grid cell	Puerto Rico
2010s	2,814 km² per grid cell	1,784 km² per grid cell	1,030 km² per grid cell	Puerto Rico
2020s	2,851 km² per grid cell	2,651 km² per grid cell	200.18 km² per grid cell	Puerto Rico

Averages of every year both report within each decade.

Frequently asked questions

Which has higher urban area over the long-term, Puerto Rico or Tanzania?: Tanzania, at 3,054 km² per grid cell against 2,845 km² per grid cell in Puerto Rico as of 2025.
What is the difference in urban area over the long-term between Puerto Rico and Tanzania?: 209 km² per grid cell, with Tanzania ahead.
How many years of comparable data are there for Puerto Rico and Tanzania?: 108 years are reported by both, from 1000 to 2025.
How do Puerto Rico and Tanzania rank globally for urban area over the long-term?: Puerto Rico ranks 43rd and Tanzania ranks 41st 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.