3301.0 - Births, Australia, 2016 Quality Declaration 
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 13/12/2017   
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MEDIA RELEASE
13 December 2017
Embargo: 11:30 am (Canberra Time)
168/2017
September most common month for babies born in Australia


The most common birthday for babies born in Australia is 17 September, according to the latest figures from the Australian Bureau of Statistics (ABS).

Analysis of the last 10 years of births data from 2007 to 2016, shows that:
  • Of the five most common birthdays, three are in September,
  • Two of the five least common birthdays are in December,
  • The least common birthday is 25 December (excluding 29 February, which only occurs in leap years).

"These trends are similar in New Zealand, England and Wales, and the United States," Beidar Cho, the ABS Director of Demography, said. "More babies are likely to be conceived around the Christmas/New Year holidays, resulting in more babies born in September and October. Fewer babies are born on public holidays - possibly a result of doctors scheduling deliveries on non-public holidays."


Table: Top 5 most common and least common birthdays over the past 10 years(a)(b)

5 most common birthdays Rank
Number of persons with same birthday

September 17 (Rank 1)
8,862
April 8 (Rank 2)
8,829
September 23 (Rank 3)
8,816
September 24/ October 1 (Rank 4)
8,813
February 12 (Rank 5)
8,810

5 least common birthdays

February 29 (Rank 366)
2,327
December 25 (Rank 365)
4,388
December 26 (Rank 364)
4,743
January 1 (Rank 363)
6,017
January 26 (Rank 362)
6,136

(a) Based on month and day of birth, 2007-2016.
(b) Days are ranked 1 to 366 by number of births, where 1 is the most common birthday and 366 is the least common birthday. Some days are tied for ranking, as they had the same number of births (eg. September 24th and October 1st).


A total of 311,104 births were registered in Australia in 2016, up from 305,377 in 2015.

In 2016, Australia's total fertility rate was 1.79 babies per woman, the same as in 2015. The total fertility rate for Aboriginal and Torres Strait Islander mothers in 2016 was 2.12 babies per woman.


All birthday ranks are in the table below.


Table: Birthday rank over the past 10 years(a)(b)

DAY
MONTH

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
1
363
97
210
294
61
252
36
120
189
4
326
342
2
297
172
72
18
158
233
130
301
121
128
321
334
3
269
146
92
154
264
63
170
218
50
183
333
304
4
59
37
8
32
213
41
213
211
196
280
258
332
5
76
16
10
276
119
81
291
88
185
274
157
348
6
162
116
83
331
56
147
196
79
289
206
281
355
7
71
262
34
104
93
276
200
153
254
131
300
350
8
52
143
260
2
165
295
68
125
171
25
329
347
9
255
141
124
143
165
323
90
263
48
63
321
339
10
272
106
127
230
271
114
218
216
33
136
292
286
11
140
46
24
59
193
95
244
216
250
265
226
316
12
163
6
26
175
159
109
269
90
110
246
179
327
13
259
243
209
320
222
317
265
195
302
237
313
357
14
72
242
152
151
43
330
239
188
83
76
311
351
15
110
78
223
28
199
126
122
220
129
21
344
343
16
159
47
134
9
175
138
54
283
14
206
324
305
17
273
98
75
118
335
69
173
228
1
220
314
159
18
215
11
17
249
225
29
212
204
30
325
303
204
19
185
38
13
253
203
131
306
113
58
275
267
308
20
150
74
45
136
62
103
174
100
108
256
283
346
21
70
245
201
192
40
261
169
237
66
142
337
328
22
35
101
226
82
201
181
39
168
123
85
354
336
23
155
102
99
12
191
194
54
267
3
187
345
349
24
232
94
206
53
296
49
190
279
4
231
338
358
25
85
23
27
361
167
31
156
257
42
315
311
365
26
362
20
15
341
234
139
288
164
80
310
306
364
27
285
44
87
134
96
182
148
177
241
278
319
360
28
240
198
179
105
51
235
133
236
117
224
340
359
29
57
366
287
7
248
184
66
247
114
145
356
282
30
107
na
63
22
251
148
110
318
19
229
352
290
31
299
na
88
na
297
na
178
293
na
309
na
353

(a) Based on month and day of birth, 2007-2016.
(b) Days are ranked 1 to 366 by number of births, where 1 is the most common birthday and 366 is the least common birthday. Some days are tied for ranking, as they had the same number of births (eg. September 24th and October 1st).
na not applicable.


Media Notes:
  • When reporting ABS data, the Australian Bureau of Statistics (or ABS) must be attributed as the source.
  • For media requests and interviews, contact the ABS Communications and Partnerships Section on 1300 175 070 (8.30am - 5pm Mon-Fri).
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