Im super confused with Facebook's Social Reach and there Targeted Reach.
My Ad does not seem to be getting displayed as much as it needs to.
My Target Reach is 600,000+
and its only reached out to 3,455 people
Why isnt it being displayed?
Do I need to raise my CPC?
Help would be very appreciated 
Yeah raise your CPC and you'll get more reach, FB is fucked up...I've been doing a lot with FB lately and I'll usually do a campaign with the same exact ad 3 times, and one will get all the reach and therefore better CTR, but they are exactly the same...
Social reach = people who clicked on your ad after seeing "your friend so and so liked this". This happens with sponsored stories and ads with a like function.
Targeted reach = people inside the demo/targeting you have specified.
With reach and ad delivery it is a combination of bid and budget. Your budget has a big influence on how well FB will spread impressions over all of your ads and actually serve all/more of them. Your bid has a big influence on how many impressions each ad will get at all. If you have lots of ads and say 2/3 of them are getting the non-delivery message then it is probably your budget being too low, possibly combined with a relatively low bid. If all of your impressions are smeared across lots of ads which are being delivered, but not very often, then it will be a low bid issue.
So for a large demo, you really need to be bidding appropriately high to get exposure and have a budget that will allow for delivery of all of them. If an ad gets clicks it will steal the majority of impressions and choke off other ads as well. If you have many ads and a low budget don't expect Facebook to be able to deliver them all.
How many ads do you have in the campaign? What is your current bid? Sometimes it works better to start with far fewer ads and let your budget cover just them, then unpause more ads as your filter out low performers.
Great information, Zeno - much appreciated. I was wondering why my impressions are so much lower than my targeted reach. It must be because my daily budget is only at $500 as of this morning.
Would my high performing ads receive more impressions if i pause my poorly-performing ads?
How many ads do you have? $500 is enough to spread impressions over a lot of ads, at least a hundred in my experience. Pausing low performers will cause you to get more impressions across the remainder in general as FB is then trying to deplete your budget over fewer ads. You should pause low performers based on ROI anyway, and I tend to drop bids on my high performers quite quickly to compensate for how ridiculous FB is lately with giving 2-3 of your ads the lion's share of your ad delivery. Once I get down to mainly high performing ads the impressions even out.
What are your bids actually at? Try creating a new ad with the same demo's and switch to CPM bid and see what the suggested bid is - that will be a better indicator of what to bid. I imagine it is a low bid which is the problem. Don't be surprised if your suggested CPC bid is $0.25 but you need to go up closer to $1.00 to get volume.
Lately I have had gaming campaigns with suggested bid around $0.15 and have had to push $0.55+ to get decent volume. The down side is you lose money on initial clicks and low performers, but your end CPC on high CTR ads still drops to what it would normally be.
just a small tip on this guys....
to many ads in 1 camp = fail
the camp is a part of the fb algo....
Lol. But yeah, keep the amount of ads running in a single campaign small. FB is getting worse and worse IMO with delivering impressions across many ads.
ianz63, are those age groups just different ads within the same campaign? It would be wiser to split the age demo's to different campaigns with their own budgets. E.g. 7 campaigns in 5 years age blocks, $100 budget each, then have 10-20 ads in each campaign. It makes it easier to optimise to each demo anyway.
Personally I have found the best way to go lately is 5 images or so, 4 duplicates of each giving 20 ads. When 2 out of 4 ads with the same image under-perform I kill off all those images and add in a new set of 4. Rinse and repeat.
Daniel when you say small how many? I have 2 campaigns with close to 30 ads and they are all performing.. are you suggesting I split them to test out the bid changes?
Everything is fixed now and Our CTR is BANGING! .108 
but no conversions lol
Thanks Polarbacon!