Inhabitants of Morsang-sur-Orge are known as Morsaintois.
Historical population
Year
Pop.
±% p.a.
1793
325
—
1800
380
+2.26%
1806
386
+0.26%
1821
357
−0.52%
1831
404
+1.24%
1836
430
+1.26%
1841
481
+2.27%
1846
452
−1.24%
1851
428
−1.09%
1856
456
+1.28%
1861
520
+2.66%
1866
566
+1.71%
1872
574
+0.23%
1876
600
+1.11%
1881
651
+1.64%
1886
709
+1.72%
1891
892
+4.70%
1896
980
+1.90%
Year
Pop.
±% p.a.
1901
1,023
+0.86%
1906
973
−1.00%
1911
1,025
+1.05%
1921
1,092
+0.64%
1926
1,864
+11.29%
1931
2,799
+8.47%
1936
3,611
+5.23%
1946
3,011
−1.80%
1954
5,269
+7.25%
1962
8,604
+6.32%
1968
15,258
+10.02%
1975
20,156
+4.06%
1982
20,332
+0.12%
1990
19,401
−0.58%
1999
19,335
−0.04%
2007
21,165
+1.14%
2012
21,428
+0.25%
2017
20,909
−0.49%
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Morsang-sur-Orge is served by no station of the Paris Métro, RER, or suburban rail network. The closest station to Morsang-sur-Orge is Savigny-sur-Orge station, which is approximately a 22-minute train journey from the center of Paris on the Paris RER line. This station is located in the neighboring commune of Savigny-sur-Orge, 1.6 km (0.99 mi) from the town center of Morsang-sur-Orge.