Ardeuil-et-Montfauxelles is located 25 km south of Vouziers and 16 km east by north-east of Sommepy-Tahure on the border with the Marne department, which border forms the southern border of the commune. Access is by road D6 from Manre in the west, passing through the commune and the village before continuing east to Montcheutin. The smaller D121 road goes from the village north-east to join the D21 south-east of Challerange. Apart from the two villages of Ardeuil and Montfauxelles the commune is entirely farmland.[3]
The Allin river flows through the commune from west to north-east. It joins the Aisne river at Brécy-Brières.[3]
The inhabitants of the commune are known as Ardeuillais or Ardeuillaises in French.[5] The population data given in the table and graph below for 1821 and earlier refer to the former commune of Ardeuil.
Historical population
Year
Pop.
±% p.a.
1793
91
—
1800
102
+1.64%
1806
96
−1.01%
1821
109
+0.85%
1831
213
+6.93%
1836
215
+0.19%
1841
202
−1.24%
1846
191
−1.11%
1851
192
+0.10%
1866
201
+0.31%
1872
172
−2.56%
1876
160
−1.79%
1881
166
+0.74%
1886
176
+1.18%
1891
173
−0.34%
1896
170
−0.35%
1901
164
−0.72%
Year
Pop.
±% p.a.
1906
181
+1.99%
1911
144
−4.47%
1921
81
−5.59%
1926
124
+8.89%
1931
138
+2.16%
1936
132
−0.89%
1946
121
−0.87%
1954
143
+2.11%
1962
143
+0.00%
1968
120
−2.88%
1975
91
−3.87%
1982
89
−0.32%
1990
91
+0.28%
1999
76
−1.98%
2007
89
+1.99%
2012
83
−1.39%
2017
68
−3.91%
Graphs are unavailable due to technical issues. There is more info on Phabricator and on MediaWiki.org.