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What do you consider to be small/average/large age gap between siblings?

9 replies

littlepinkhouse · 16/07/2025 20:56

I guess it’s down to personal opinion but as the title says.
I think a small age gap is anything less then 2 years, average 2-4years and large 4.5 years+

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pixiedust79 · 16/07/2025 21:37

I would probably agree but also wouldn't think anything remarkable about an age gap until it reached about 8+, that’s when I’d tend to think that it would be a big shock going back to the baby years again. My two are 4.5 years apart and that definitely seems like a relatively large gap (and larger than we planned) but it’s still a pretty common gap going by the families we know.

IbizaToTheNorfolkBroads · 16/07/2025 21:40

I agree with your gaps @littlepinkhouse. I think 4+ years is becoming more common as people try to have the elder child in school before the younger one starts nursery.

TheNightingalesStarling · 16/07/2025 21:43

Small... under 1.5years
Average... 2-4
Large 5+

Its blurry between 1.5-2 years and between 4-5 years. Not quite average and not quite small/large.

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messyflower · 16/07/2025 21:54

There’s 24 years between me and my brother, that’s large. My DD’s are 15 months apart.

cc99xo · 16/07/2025 22:05

My son and his baby sibling will be 5.5 years apart. Definitely a bigger gap than I wanted, I always thought anything over 5 years was a pretty big gap! Average I’d say is around 2-3 years from people I know, small gap would be 2 under 2 (my worst nightmare 🙈😂)

RandomUsernameHere · 16/07/2025 22:25

I would say average is two years. Interesting that people think large gaps are becoming more common, I guessed the opposite because more people are having their first later in life.

Solore · 17/07/2025 09:50

The median age gap is 36 months in the UK so I'd say that is the average (more of a matter of statistics than personal opinion). I'd consider 18m or under to be small (occurs in 15% of cases) and I'd consider over 6 years to be large. 4.5 years is only a bit bigger than the statistical average so I wouldn't consider it to be a large gap.

The most common age gap according to the ONS is 30-36 months, which fits in with my social circle. The overall average age gap has declined from 2.5 years in the 1990s to 2 years now. I think this is often due to women having their first baby later, and then having to rush to have a second before their body clock runs out.

Vroomfondleswaistcoat · 17/07/2025 09:52

Now that people are trying not to have the expense of more than one child in childcare at a time, I would think we will see bigger gaps.

I have five children all born within seven years. I do not recommend this.

xWildFlowerx · 17/07/2025 10:03

I have 14 months gap then 20 months gap, so anything over 2 years seems 'big' to me. I love having small age gaps.

I'd like a 4th child now after being sure I was done, but I'm not sure as my youngest is 4 now - a 5 year gap seems so massive. My sisters are 6.5, 9 and 11 years younger and I always hated it because it was always sort of them all together then me by myself. So if I have a 4th I'd personally need to have a 5th a year later too.

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