Pretty Little Liars (ABC Family/Freeform): Ratings Recap

ABC Family's 'Pretty Little Liars' premiered in 2010 to a 0.9 18-49 rating, a 3.7/14 kids 2-11 rating, and 2.47 million viewers. Its first midseason finale had a 1.1 18-49 rating, 3.07 million viewers, and a huge 4.2/16 teens 12-17 rating. The show's first season averaged a 1.0 and 2.87 million viewers, but continually trended downward: averaging 2.68M in season 2, then 2.59M, 2.53M, 2.01M, 1.72M, 1.2M, and 1.03M. It concluded with a 0.72 rating and 1.41 million viewers, and aired a total of 160 episodes over the course of 7 seasons. 

Season 1 Ratings (2010-11)
Episode #	Viewers (millions)	18-49 rating
101	2.466	0.9
102	2.476	0.9
103	2.740	1.0
104	2.088	0.7
105	2.624	1.0
106	2.692	0.9
107	2.553	0.9
108	2.516	0.9
109	2.550	0.9
110	3.071	1.1
average summer 2010	2.58	0.9
111	4.222	1.5
112	3.212	1.1
113	2.992	1.2
114	3.173	1.2
115	3.192	1.2
116	3.141	1.1
117	2.346	0.9
118	2.898	1.0
119	2.688	1.0
120	2.953	1.1
121	2.939	1.1
122	3.635	1.3
average winter 2011	3.12	1.1
total season 1 average	2.87	1.0

Season 2 Ratings (2011-12)
Episode #	Viewers (millions)	18-49 rating
201	3.678	1.3
202	2.655	1.0
203	2.777	1.0
204	2.422	0.9
205	2.424	0.9
206	2.528	0.9
207	2.358	0.9
208	2.414	0.8
209	2.541	0.9
210	2.295	0.8
211	2.627	1.0
212	2.979	1.2
average summer 2012	2.64	1.0
213	2.470	1.0
214	3.342	1.3
215	2.948	1.3
216	2.784	1.1
217	3.165	1.4
218	2.554	0.9
219	2.250	1.0
220	2.106	0.8
221	2.539	1.0
222	2.486	1.0
223	2.577	1.0
224	2.470	1.0
225	3.689	1.6
average winter 2012	2.74	1.1
total season 2 average	2.68	1.0

Season 3 Ratings (2012-13)
Episode #	Viewers (millions)	18-49 rating
301	2.932	1.1
302	2.663	1.1
303	2.440	1.0
304	2.355	1.0
305	2.380	0.9
306	2.270	1.0
307	2.428	1.0
308	2.222	0.9
309	2.445	1.0
310	2.265	1.0
311	2.399	1.1
312	2.977	1.3
average summer 2012	2.48	1.0
313	2.849	1.2
314	3.210	1.4
315	2.480	1.1
316	2.676	1.2
317	2.845	1.2
318	2.750	1.2
319	2.410	1.1
320	2.612	1.1
321	2.712	1.2
322	2.559	1.2
323	2.413	1.0
324	2.874	1.2
average winter 2013	2.70	1.2
total season 3 average	2.59	1.1

Season 4 Ratings (2013-14)
Episode #	Viewers (millions)	18-49 rating
401	2.972	1.3
402	2.917	1.3
403	2.247	0.9
404	2.157	0.9
405	2.301	1.0
406	2.353	1.0
407	2.856	1.3
408	2.313	1.1
409	2.645	1.1
410	2.385	1.0
411	2.263	0.9
412	3.325	1.4
average summer 2013	2.56	1.1
413	3.184	1.4
414	3.171	1.21
415	2.393	1.06
416	2.632	1.20
417	2.494	1.03
418	2.164	0.94
419	2.161	0.88
420	2.558	1.02
421	2.171	0.96
422	2.064	0.81
423	1.947	0.83
424	3.116	1.28
average winter 2014	2.44	1.0
total season 4 average	2.53	1.1

Season 5 Ratings (2014-15)
Episode #	Viewers (millions)	18-49 rating
501	2.722	1.11
502	2.160	0.91
503	2.276	1.02
504	2.126	0.94
505	2.249	0.98
506	2.128	1.01
507	2.063	1.0
508	1.803	0.75
509	2.050	0.95
510	2.053	0.90
511	1.801	0.76
512	2.294	1.03
average summer 2014	2.14	1.0
513	2.085	0.90
514	2.012	0.95
515	2.024	0.93
516	1.722	0.74
517	1.996	0.92
518	1.797	0.84
519	1.774	0.84
520	2.045	0.89
521	1.577	0.74
522	1.490	0.67
523	1.740	0.86
524	1.698	0.86
525	2.645	1.27
average winter 2015	1.88	0.88
season ave.	2.01	0.9

Season 6 Ratings (2015-16)
Episode #	Viewers (millions)	18-49 rating
601	2.378	1.06
602	2.133	0.99
603	1.743	0.72
604	1.841	0.75
605	1.795	0.80
606	1.704	0.84
607	1.773	0.79
608	1.584	0.74
609	2.031	0.84
610	3.087	1.39
average summer 2015	2.01	0.89
611	2.246	1.06
612	1.664	0.83
613	1.648	0.79
614	1.391	0.63
615	1.224	0.59
616	1.356	0.69
617	1.271	0.59
618	1.145	0.55
619	1.263	0.66
620	1.186	0.59
average winter 2015	1.44	0.70
season ave.	1.72	0.80

Season 7.1 Ratings (2016)
Episode #	Viewers (millions)	18-49 rating
701	1.429	0.67
702	1.236	0.56
703	1.117	0.53
704	1.257	0.60
705	1.174	0.57
706	1.101	0.54
707	1.159	0.60
708	1.110	0.55
709	1.090	0.54
710	1.327	0.68
season ave.	1.20	0.58

Season 7.2 Ratings (2017)
Episode #	Viewers (millions)	18-49 rating
711	1.330	0.65
712	0.915	0.45
713	0.856	0.40
714	0.911	0.45
715	0.851	0.41
716	0.900	0.43
717	0.966	0.50
718	0.961	0.46
719	0.830	0.43
720A+B	1.406	0.72
season ave.	1.03	0.51

Source: Nielsen Media Research