연도별 인구| 연도 | 인구 | ±% |
|---|
| 1821 | 6,701 | — |
|---|
| 1831 | 7,711 | +15.1% |
|---|
| 1841 | 9,318 | +20.8% |
|---|
| 1851 | 7,843 | −15.8% |
|---|
| 1861 | 7,041 | −10.2% |
|---|
| 1871 | 6,503 | −7.6% |
|---|
| 1881 | 6,307 | −3.0% |
|---|
| 1891 | 5,460 | −13.4% |
|---|
| 1901 | 5,093 | −6.7% |
|---|
| 1911 | 5,472 | +7.4% |
|---|
| 1926 | 5,518 | +0.8% |
|---|
| 1936 | 5,897 | +6.9% |
|---|
| 1946 | 5,871 | −0.4% |
|---|
| 1951 | 6,097 | +3.8% |
|---|
| 1956 | 8,292 | +36.0% |
|---|
| 1961 | 8,410 | +1.4% |
|---|
| 1966 | 9,181 | +9.2% |
|---|
| 1971 | 10,840 | +18.1% |
|---|
| 1981 | 14,640 | +35.1% |
|---|
| 1986 | 15,547 | +6.2% |
|---|
| 1991 | 16,058 | +3.3% |
|---|
| 1996 | 17,726 | +10.4% |
|---|
| 2002 | 22,051 | +24.4% |
|---|
| 2006 | 24,553 | +11.3% |
|---|
| 2011 | 25,360 | +3.3% |
|---|
| 2016 | 25,276 | −0.3% |
|---|
| [1] |
- ↑ Figure is total for Ennis UD and Ennis environs. “Archived copy”. 2005년 3월 9일에 원본 문서에서 보존된 문서. 2012년 5월 1일에 확인함. and www.histpop.org for post 1821 figures, For a discussion on the accuracy of pre-famine census returns see JJ Lee "On the accuracy of the Pre-famine Irish censuses", Irish Population, Economy and Society edited by JM Goldstrom and LA Clarkson (1981) p54, in and also New Developments in Irish Population History, 1700–1850 by Joel Mokyr and Cormac O Grada in The Economic History Review, New Series, Vol. 37, No. 4 (November 1984), pp. 473–488.
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